Home / 18,711.50-25,821.90-10,328

Finding the Fourth Proportional to 18,711.50, 25,821.90 and 10,328

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Solution

The fourth proportional to 18,711.50, 25,821.90 and 10,328 is: 14,252.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.50 : 25,821.90 = 10,328 : x
  2. Step 2: Convert to fraction form
    18,711.50/25,821.90 = 10,328/x
  3. Step 3: Cross multiply
    18,711.50x = 25,821.90 × 10,328
  4. Step 4: Simplify right side
    18,711.50x = 266,688,583.20
  5. Step 5: Solve for x
    x = 266,688,583.20/18,711.50
  6. Step 6: Final answer
    x = 14,252.66

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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.