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Finding the Fourth Proportional to 18,445.68, 25,454.10 and 11,287.50

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Solution

The fourth proportional to 18,445.68, 25,454.10 and 11,287.50 is: 15,576.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,445.68 : 25,454.10 = 11,287.50 : x
  2. Step 2: Convert to fraction form
    18,445.68/25,454.10 = 11,287.50/x
  3. Step 3: Cross multiply
    18,445.68x = 25,454.10 × 11,287.50
  4. Step 4: Simplify right side
    18,445.68x = 287,313,153.75
  5. Step 5: Solve for x
    x = 287,313,153.75/18,445.68
  6. Step 6: Final answer
    x = 15,576.18

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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.