Home / 20,656.14-28,505.91-11,224.62

Finding the Fourth Proportional to 20,656.14, 28,505.91 and 11,224.62

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Solution

The fourth proportional to 20,656.14, 28,505.91 and 11,224.62 is: 15,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.14 : 28,505.91 = 11,224.62 : x
  2. Step 2: Convert to fraction form
    20,656.14/28,505.91 = 11,224.62/x
  3. Step 3: Cross multiply
    20,656.14x = 28,505.91 × 11,224.62
  4. Step 4: Simplify right side
    20,656.14x = 319,968,007.50
  5. Step 5: Solve for x
    x = 319,968,007.50/20,656.14
  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.