Home / 20,656.20-28,505.22-11,224.92

Finding the Fourth Proportional to 20,656.20, 28,505.22 and 11,224.92

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Solution

The fourth proportional to 20,656.20, 28,505.22 and 11,224.92 is: 15,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.20 : 28,505.22 = 11,224.92 : x
  2. Step 2: Convert to fraction form
    20,656.20/28,505.22 = 11,224.92/x
  3. Step 3: Cross multiply
    20,656.20x = 28,505.22 × 11,224.92
  4. Step 4: Simplify right side
    20,656.20x = 319,968,814.08
  5. Step 5: Solve for x
    x = 319,968,814.08/20,656.20
  6. Step 6: Final answer
    x = 15,490.21

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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.