Home / 18,391.28-25,381.68-10,839.95

Finding the Fourth Proportional to 18,391.28, 25,381.68 and 10,839.95

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Solution

The fourth proportional to 18,391.28, 25,381.68 and 10,839.95 is: 14,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.28 : 25,381.68 = 10,839.95 : x
  2. Step 2: Convert to fraction form
    18,391.28/25,381.68 = 10,839.95/x
  3. Step 3: Cross multiply
    18,391.28x = 25,381.68 × 10,839.95
  4. Step 4: Simplify right side
    18,391.28x = 275,136,142.12
  5. Step 5: Solve for x
    x = 275,136,142.12/18,391.28
  6. Step 6: Final answer
    x = 14,960.14

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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.