Home / 15,645.27-21,592.29-8,931.87

Finding the Fourth Proportional to 15,645.27, 21,592.29 and 8,931.87

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Solution

The fourth proportional to 15,645.27, 21,592.29 and 8,931.87 is: 12,327.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.27 : 21,592.29 = 8,931.87 : x
  2. Step 2: Convert to fraction form
    15,645.27/21,592.29 = 8,931.87/x
  3. Step 3: Cross multiply
    15,645.27x = 21,592.29 × 8,931.87
  4. Step 4: Simplify right side
    15,645.27x = 192,859,560.78
  5. Step 5: Solve for x
    x = 192,859,560.78/15,645.27
  6. Step 6: Final answer
    x = 12,327.02

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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.