Home / 21,211.24-29,272.44-11,780.68

Finding the Fourth Proportional to 21,211.24, 29,272.44 and 11,780.68

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Solution

The fourth proportional to 21,211.24, 29,272.44 and 11,780.68 is: 16,257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.24 : 29,272.44 = 11,780.68 : x
  2. Step 2: Convert to fraction form
    21,211.24/29,272.44 = 11,780.68/x
  3. Step 3: Cross multiply
    21,211.24x = 29,272.44 × 11,780.68
  4. Step 4: Simplify right side
    21,211.24x = 344,849,248.46
  5. Step 5: Solve for x
    x = 344,849,248.46/21,211.24
  6. Step 6: Final answer
    x = 16,257.85

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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.