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Finding the Fourth Proportional to 18,454.70, 25,467.36 and 10,071.20

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Solution

The fourth proportional to 18,454.70, 25,467.36 and 10,071.20 is: 13,898.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.70 : 25,467.36 = 10,071.20 : x
  2. Step 2: Convert to fraction form
    18,454.70/25,467.36 = 10,071.20/x
  3. Step 3: Cross multiply
    18,454.70x = 25,467.36 × 10,071.20
  4. Step 4: Simplify right side
    18,454.70x = 256,486,876.03
  5. Step 5: Solve for x
    x = 256,486,876.03/18,454.70
  6. Step 6: Final answer
    x = 13,898.19

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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.