Home / 20,944.57-31,439.23-8,472.74

Finding the Fourth Proportional to 20,944.57, 31,439.23 and 8,472.74

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Solution

The fourth proportional to 20,944.57, 31,439.23 and 8,472.74 is: 12,718.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,944.57 : 31,439.23 = 8,472.74 : x
  2. Step 2: Convert to fraction form
    20,944.57/31,439.23 = 8,472.74/x
  3. Step 3: Cross multiply
    20,944.57x = 31,439.23 × 8,472.74
  4. Step 4: Simplify right side
    20,944.57x = 266,376,532.31
  5. Step 5: Solve for x
    x = 266,376,532.31/20,944.57
  6. Step 6: Final answer
    x = 12,718.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.