Home / 20,972.16-31,472.82-14,404.68

Finding the Fourth Proportional to 20,972.16, 31,472.82 and 14,404.68

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Solution

The fourth proportional to 20,972.16, 31,472.82 and 14,404.68 is: 21,617.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.16 : 31,472.82 = 14,404.68 : x
  2. Step 2: Convert to fraction form
    20,972.16/31,472.82 = 14,404.68/x
  3. Step 3: Cross multiply
    20,972.16x = 31,472.82 × 14,404.68
  4. Step 4: Simplify right side
    20,972.16x = 453,355,900.80
  5. Step 5: Solve for x
    x = 453,355,900.80/20,972.16
  6. Step 6: Final answer
    x = 21,617.03

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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.