Home / 11,957.20-16,491.40-7,472.40

Finding the Fourth Proportional to 11,957.20, 16,491.40 and 7,472.40

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Solution

The fourth proportional to 11,957.20, 16,491.40 and 7,472.40 is: 10,305.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,957.20 : 16,491.40 = 7,472.40 : x
  2. Step 2: Convert to fraction form
    11,957.20/16,491.40 = 7,472.40/x
  3. Step 3: Cross multiply
    11,957.20x = 16,491.40 × 7,472.40
  4. Step 4: Simplify right side
    11,957.20x = 123,230,337.36
  5. Step 5: Solve for x
    x = 123,230,337.36/11,957.20
  6. Step 6: Final answer
    x = 10,305.95

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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.