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Finding the Fourth Proportional to 18,449.60, 25,460.32 and 10,065.92

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Solution

The fourth proportional to 18,449.60, 25,460.32 and 10,065.92 is: 13,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.60 : 25,460.32 = 10,065.92 : x
  2. Step 2: Convert to fraction form
    18,449.60/25,460.32 = 10,065.92/x
  3. Step 3: Cross multiply
    18,449.60x = 25,460.32 × 10,065.92
  4. Step 4: Simplify right side
    18,449.60x = 256,281,544.29
  5. Step 5: Solve for x
    x = 256,281,544.29/18,449.60
  6. Step 6: Final answer
    x = 13,890.90

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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.