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Finding the Fourth Proportional to 18,753.71, 25,880.06 and 10,370.21

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Solution

The fourth proportional to 18,753.71, 25,880.06 and 10,370.21 is: 14,310.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.71 : 25,880.06 = 10,370.21 : x
  2. Step 2: Convert to fraction form
    18,753.71/25,880.06 = 10,370.21/x
  3. Step 3: Cross multiply
    18,753.71x = 25,880.06 × 10,370.21
  4. Step 4: Simplify right side
    18,753.71x = 268,381,605.16
  5. Step 5: Solve for x
    x = 268,381,605.16/18,753.71
  6. Step 6: Final answer
    x = 14,310.85

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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.