Home / 15,487.53-21,373.05-8,772.99

Finding the Fourth Proportional to 15,487.53, 21,373.05 and 8,772.99

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Solution

The fourth proportional to 15,487.53, 21,373.05 and 8,772.99 is: 12,106.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.53 : 21,373.05 = 8,772.99 : x
  2. Step 2: Convert to fraction form
    15,487.53/21,373.05 = 8,772.99/x
  3. Step 3: Cross multiply
    15,487.53x = 21,373.05 × 8,772.99
  4. Step 4: Simplify right side
    15,487.53x = 187,505,553.92
  5. Step 5: Solve for x
    x = 187,505,553.92/15,487.53
  6. Step 6: Final answer
    x = 12,106.87

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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.