Home / 28,518,815,681.36-39,353,990,698.59-15,830,551,975.22

Finding the Fourth Proportional to 28,518,815,681.36, 39,353,990,698.59 and 15,830,551,975.22

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Solution

The fourth proportional to 28,518,815,681.36, 39,353,990,698.59 and 15,830,551,975.22 is: 21,845,065,452.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518,815,681.36 : 39,353,990,698.59 = 15,830,551,975.22 : x
  2. Step 2: Convert to fraction form
    28,518,815,681.36/39,353,990,698.59 = 15,830,551,975.22/x
  3. Step 3: Cross multiply
    28,518,815,681.36x = 39,353,990,698.59 × 15,830,551,975.22
  4. Step 4: Simplify right side
    28,518,815,681.36x = 622,995,395,186,353,373,184
  5. Step 5: Solve for x
    x = 622,995,395,186,353,373,184/28,518,815,681.36
  6. Step 6: Final answer
    x = 21,845,065,452.47

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.