Home / 21,123.16-29,188.52-20,098.36

Finding the Fourth Proportional to 21,123.16, 29,188.52 and 20,098.36

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Solution

The fourth proportional to 21,123.16, 29,188.52 and 20,098.36 is: 27,772.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.16 : 29,188.52 = 20,098.36 : x
  2. Step 2: Convert to fraction form
    21,123.16/29,188.52 = 20,098.36/x
  3. Step 3: Cross multiply
    21,123.16x = 29,188.52 × 20,098.36
  4. Step 4: Simplify right side
    21,123.16x = 586,641,382.83
  5. Step 5: Solve for x
    x = 586,641,382.83/21,123.16
  6. Step 6: Final answer
    x = 27,772.43

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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.