Home / 15,711.46-21,682.24-8,541.86

Finding the Fourth Proportional to 15,711.46, 21,682.24 and 8,541.86

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Solution

The fourth proportional to 15,711.46, 21,682.24 and 8,541.86 is: 11,787.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,711.46 : 21,682.24 = 8,541.86 : x
  2. Step 2: Convert to fraction form
    15,711.46/21,682.24 = 8,541.86/x
  3. Step 3: Cross multiply
    15,711.46x = 21,682.24 × 8,541.86
  4. Step 4: Simplify right side
    15,711.46x = 185,206,528.80
  5. Step 5: Solve for x
    x = 185,206,528.80/15,711.46
  6. Step 6: Final answer
    x = 11,787.99

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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.