Home / 28,715,839.60-39,627,982.74-15,663,378.64

Finding the Fourth Proportional to 28,715,839.60, 39,627,982.74 and 15,663,378.64

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Solution

The fourth proportional to 28,715,839.60, 39,627,982.74 and 15,663,378.64 is: 21,615,530.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715,839.60 : 39,627,982.74 = 15,663,378.64 : x
  2. Step 2: Convert to fraction form
    28,715,839.60/39,627,982.74 = 15,663,378.64/x
  3. Step 3: Cross multiply
    28,715,839.60x = 39,627,982.74 × 15,663,378.64
  4. Step 4: Simplify right side
    28,715,839.60x = 620,708,098,396,004.75
  5. Step 5: Solve for x
    x = 620,708,098,396,004.75/28,715,839.60
  6. Step 6: Final answer
    x = 21,615,530.21

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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.