Home / 18,520.38-25,557.84-10,136.88

Finding the Fourth Proportional to 18,520.38, 25,557.84 and 10,136.88

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Solution

The fourth proportional to 18,520.38, 25,557.84 and 10,136.88 is: 13,988.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.38 : 25,557.84 = 10,136.88 : x
  2. Step 2: Convert to fraction form
    18,520.38/25,557.84 = 10,136.88/x
  3. Step 3: Cross multiply
    18,520.38x = 25,557.84 × 10,136.88
  4. Step 4: Simplify right side
    18,520.38x = 259,076,757.14
  5. Step 5: Solve for x
    x = 259,076,757.14/18,520.38
  6. Step 6: Final answer
    x = 13,988.74

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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.