Home / 21,558.92-29,761.79-14,393.07

Finding the Fourth Proportional to 21,558.92, 29,761.79 and 14,393.07

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Solution

The fourth proportional to 21,558.92, 29,761.79 and 14,393.07 is: 19,869.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.92 : 29,761.79 = 14,393.07 : x
  2. Step 2: Convert to fraction form
    21,558.92/29,761.79 = 14,393.07/x
  3. Step 3: Cross multiply
    21,558.92x = 29,761.79 × 14,393.07
  4. Step 4: Simplify right side
    21,558.92x = 428,363,454.83
  5. Step 5: Solve for x
    x = 428,363,454.83/21,558.92
  6. Step 6: Final answer
    x = 19,869.43

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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.