Home / 21,355.68-29,471.04-11,924.40

Finding the Fourth Proportional to 21,355.68, 29,471.04 and 11,924.40

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Solution

The fourth proportional to 21,355.68, 29,471.04 and 11,924.40 is: 16,455.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,355.68 : 29,471.04 = 11,924.40 : x
  2. Step 2: Convert to fraction form
    21,355.68/29,471.04 = 11,924.40/x
  3. Step 3: Cross multiply
    21,355.68x = 29,471.04 × 11,924.40
  4. Step 4: Simplify right side
    21,355.68x = 351,424,469.38
  5. Step 5: Solve for x
    x = 351,424,469.38/21,355.68
  6. Step 6: Final answer
    x = 16,455.78

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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.