Home / 15,990.28-22,066.64-8,916.76

Finding the Fourth Proportional to 15,990.28, 22,066.64 and 8,916.76

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Solution

The fourth proportional to 15,990.28, 22,066.64 and 8,916.76 is: 12,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.28 : 22,066.64 = 8,916.76 : x
  2. Step 2: Convert to fraction form
    15,990.28/22,066.64 = 8,916.76/x
  3. Step 3: Cross multiply
    15,990.28x = 22,066.64 × 8,916.76
  4. Step 4: Simplify right side
    15,990.28x = 196,762,932.89
  5. Step 5: Solve for x
    x = 196,762,932.89/15,990.28
  6. Step 6: Final answer
    x = 12,305.16

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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.