Home / 20,381.98-28,114.19-14,725.04

Finding the Fourth Proportional to 20,381.98, 28,114.19 and 14,725.04

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Solution

The fourth proportional to 20,381.98, 28,114.19 and 14,725.04 is: 20,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.98 : 28,114.19 = 14,725.04 : x
  2. Step 2: Convert to fraction form
    20,381.98/28,114.19 = 14,725.04/x
  3. Step 3: Cross multiply
    20,381.98x = 28,114.19 × 14,725.04
  4. Step 4: Simplify right side
    20,381.98x = 413,982,498.69
  5. Step 5: Solve for x
    x = 413,982,498.69/20,381.98
  6. Step 6: Final answer
    x = 20,311.20

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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.