Home / 18,381.31-25,371.98-10,428.82

Finding the Fourth Proportional to 18,381.31, 25,371.98 and 10,428.82

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Solution

The fourth proportional to 18,381.31, 25,371.98 and 10,428.82 is: 14,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.31 : 25,371.98 = 10,428.82 : x
  2. Step 2: Convert to fraction form
    18,381.31/25,371.98 = 10,428.82/x
  3. Step 3: Cross multiply
    18,381.31x = 25,371.98 × 10,428.82
  4. Step 4: Simplify right side
    18,381.31x = 264,599,812.46
  5. Step 5: Solve for x
    x = 264,599,812.46/18,381.31
  6. Step 6: Final answer
    x = 14,395.05

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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.