Home / 21,380.15-29,511.95-14,687.93

Finding the Fourth Proportional to 21,380.15, 29,511.95 and 14,687.93

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Solution

The fourth proportional to 21,380.15, 29,511.95 and 14,687.93 is: 20,274.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.15 : 29,511.95 = 14,687.93 : x
  2. Step 2: Convert to fraction form
    21,380.15/29,511.95 = 14,687.93/x
  3. Step 3: Cross multiply
    21,380.15x = 29,511.95 × 14,687.93
  4. Step 4: Simplify right side
    21,380.15x = 433,469,456.10
  5. Step 5: Solve for x
    x = 433,469,456.10/21,380.15
  6. Step 6: Final answer
    x = 20,274.39

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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.