Home / 20,656.20-28,505.38-11,224.83

Finding the Fourth Proportional to 20,656.20, 28,505.38 and 11,224.83

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Solution

The fourth proportional to 20,656.20, 28,505.38 and 11,224.83 is: 15,490.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.20 : 28,505.38 = 11,224.83 : x
  2. Step 2: Convert to fraction form
    20,656.20/28,505.38 = 11,224.83/x
  3. Step 3: Cross multiply
    20,656.20x = 28,505.38 × 11,224.83
  4. Step 4: Simplify right side
    20,656.20x = 319,968,044.59
  5. Step 5: Solve for x
    x = 319,968,044.59/20,656.20
  6. Step 6: Final answer
    x = 15,490.17

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1.5x scale

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.