Home / 21,327.92-29,416.66-15,660.89

Finding the Fourth Proportional to 21,327.92, 29,416.66 and 15,660.89

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Solution

The fourth proportional to 21,327.92, 29,416.66 and 15,660.89 is: 21,600.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.92 : 29,416.66 = 15,660.89 : x
  2. Step 2: Convert to fraction form
    21,327.92/29,416.66 = 15,660.89/x
  3. Step 3: Cross multiply
    21,327.92x = 29,416.66 × 15,660.89
  4. Step 4: Simplify right side
    21,327.92x = 460,690,890.19
  5. Step 5: Solve for x
    x = 460,690,890.19/21,327.92
  6. Step 6: Final answer
    x = 21,600.37

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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.