Home / 21,302.46-29,385.18-13,330.85

Finding the Fourth Proportional to 21,302.46, 29,385.18 and 13,330.85

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Solution

The fourth proportional to 21,302.46, 29,385.18 and 13,330.85 is: 18,388.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.46 : 29,385.18 = 13,330.85 : x
  2. Step 2: Convert to fraction form
    21,302.46/29,385.18 = 13,330.85/x
  3. Step 3: Cross multiply
    21,302.46x = 29,385.18 × 13,330.85
  4. Step 4: Simplify right side
    21,302.46x = 391,729,279.88
  5. Step 5: Solve for x
    x = 391,729,279.88/21,302.46
  6. Step 6: Final answer
    x = 18,388.92

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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.