Home / 20,349.72-28,084.38-11,397.06

Finding the Fourth Proportional to 20,349.72, 28,084.38 and 11,397.06

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Solution

The fourth proportional to 20,349.72, 28,084.38 and 11,397.06 is: 15,728.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.72 : 28,084.38 = 11,397.06 : x
  2. Step 2: Convert to fraction form
    20,349.72/28,084.38 = 11,397.06/x
  3. Step 3: Cross multiply
    20,349.72x = 28,084.38 × 11,397.06
  4. Step 4: Simplify right side
    20,349.72x = 320,079,363.92
  5. Step 5: Solve for x
    x = 320,079,363.92/20,349.72
  6. Step 6: Final answer
    x = 15,728.93

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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.