Home / 28,730,740.16-39,649,262.72-15,678,840.12

Finding the Fourth Proportional to 28,730,740.16, 39,649,262.72 and 15,678,840.12

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Solution

The fourth proportional to 28,730,740.16, 39,649,262.72 and 15,678,840.12 is: 21,637,258.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730,740.16 : 39,649,262.72 = 15,678,840.12 : x
  2. Step 2: Convert to fraction form
    28,730,740.16/39,649,262.72 = 15,678,840.12/x
  3. Step 3: Cross multiply
    28,730,740.16x = 39,649,262.72 × 15,678,840.12
  4. Step 4: Simplify right side
    28,730,740.16x = 621,654,451,062,756.25
  5. Step 5: Solve for x
    x = 621,654,451,062,756.25/28,730,740.16
  6. Step 6: Final answer
    x = 21,637,258.48

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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.