Home / 20,752.55-31,097.25-15,209.57

Finding the Fourth Proportional to 20,752.55, 31,097.25 and 15,209.57

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Solution

The fourth proportional to 20,752.55, 31,097.25 and 15,209.57 is: 22,791.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.55 : 31,097.25 = 15,209.57 : x
  2. Step 2: Convert to fraction form
    20,752.55/31,097.25 = 15,209.57/x
  3. Step 3: Cross multiply
    20,752.55x = 31,097.25 × 15,209.57
  4. Step 4: Simplify right side
    20,752.55x = 472,975,800.68
  5. Step 5: Solve for x
    x = 472,975,800.68/20,752.55
  6. Step 6: Final answer
    x = 22,791.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.