Home / 20,712.48-30,973.32-15,385.71

Finding the Fourth Proportional to 20,712.48, 30,973.32 and 15,385.71

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Solution

The fourth proportional to 20,712.48, 30,973.32 and 15,385.71 is: 23,007.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.48 : 30,973.32 = 15,385.71 : x
  2. Step 2: Convert to fraction form
    20,712.48/30,973.32 = 15,385.71/x
  3. Step 3: Cross multiply
    20,712.48x = 30,973.32 × 15,385.71
  4. Step 4: Simplify right side
    20,712.48x = 476,546,519.26
  5. Step 5: Solve for x
    x = 476,546,519.26/20,712.48
  6. Step 6: Final answer
    x = 23,007.70

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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.