Home / 20,670.92-28,516.66-13,773.96

Finding the Fourth Proportional to 20,670.92, 28,516.66 and 13,773.96

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Solution

The fourth proportional to 20,670.92, 28,516.66 and 13,773.96 is: 19,001.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.92 : 28,516.66 = 13,773.96 : x
  2. Step 2: Convert to fraction form
    20,670.92/28,516.66 = 13,773.96/x
  3. Step 3: Cross multiply
    20,670.92x = 28,516.66 × 13,773.96
  4. Step 4: Simplify right side
    20,670.92x = 392,787,334.17
  5. Step 5: Solve for x
    x = 392,787,334.17/20,670.92
  6. Step 6: Final answer
    x = 19,001.93

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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.