Home / 21,318.47-29,418.76-11,758.73

Finding the Fourth Proportional to 21,318.47, 29,418.76 and 11,758.73

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Solution

The fourth proportional to 21,318.47, 29,418.76 and 11,758.73 is: 16,226.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.47 : 29,418.76 = 11,758.73 : x
  2. Step 2: Convert to fraction form
    21,318.47/29,418.76 = 11,758.73/x
  3. Step 3: Cross multiply
    21,318.47x = 29,418.76 × 11,758.73
  4. Step 4: Simplify right side
    21,318.47x = 345,927,280.62
  5. Step 5: Solve for x
    x = 345,927,280.62/21,318.47
  6. Step 6: Final answer
    x = 16,226.65

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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.