Home / 28,531,390.20-39,373,332.74-15,478,645.65

Finding the Fourth Proportional to 28,531,390.20, 39,373,332.74 and 15,478,645.65

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Solution

The fourth proportional to 28,531,390.20, 39,373,332.74 and 15,478,645.65 is: 21,360,538.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531,390.20 : 39,373,332.74 = 15,478,645.65 : x
  2. Step 2: Convert to fraction form
    28,531,390.20/39,373,332.74 = 15,478,645.65/x
  3. Step 3: Cross multiply
    28,531,390.20x = 39,373,332.74 × 15,478,645.65
  4. Step 4: Simplify right side
    28,531,390.20x = 609,445,865,542,003.62
  5. Step 5: Solve for x
    x = 609,445,865,542,003.62/28,531,390.20
  6. Step 6: Final answer
    x = 21,360,538.74

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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.