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Finding the Fourth Proportional to 18,581.10, 25,641.05 and 10,515.12

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Solution

The fourth proportional to 18,581.10, 25,641.05 and 10,515.12 is: 14,510.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.10 : 25,641.05 = 10,515.12 : x
  2. Step 2: Convert to fraction form
    18,581.10/25,641.05 = 10,515.12/x
  3. Step 3: Cross multiply
    18,581.10x = 25,641.05 × 10,515.12
  4. Step 4: Simplify right side
    18,581.10x = 269,618,717.68
  5. Step 5: Solve for x
    x = 269,618,717.68/18,581.10
  6. Step 6: Final answer
    x = 14,510.37

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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.