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Finding the Fourth Proportional to 18,147.60, 25,088.60 and 17,981.35

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Solution

The fourth proportional to 18,147.60, 25,088.60 and 17,981.35 is: 24,858.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147.60 : 25,088.60 = 17,981.35 : x
  2. Step 2: Convert to fraction form
    18,147.60/25,088.60 = 17,981.35/x
  3. Step 3: Cross multiply
    18,147.60x = 25,088.60 × 17,981.35
  4. Step 4: Simplify right side
    18,147.60x = 451,126,879.84
  5. Step 5: Solve for x
    x = 451,126,879.84/18,147.60
  6. Step 6: Final answer
    x = 24,858.76

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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.