Home / 18,381.62-25,371.14-10,428.50

Finding the Fourth Proportional to 18,381.62, 25,371.14 and 10,428.50

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Solution

The fourth proportional to 18,381.62, 25,371.14 and 10,428.50 is: 14,393.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.62 : 25,371.14 = 10,428.50 : x
  2. Step 2: Convert to fraction form
    18,381.62/25,371.14 = 10,428.50/x
  3. Step 3: Cross multiply
    18,381.62x = 25,371.14 × 10,428.50
  4. Step 4: Simplify right side
    18,381.62x = 264,582,754.49
  5. Step 5: Solve for x
    x = 264,582,754.49/18,381.62
  6. Step 6: Final answer
    x = 14,393.88

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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.