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Finding the Fourth Proportional to 18,278.32, 27,432.84 and 17,126.32

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Solution

The fourth proportional to 18,278.32, 27,432.84 and 17,126.32 is: 25,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.32 : 27,432.84 = 17,126.32 : x
  2. Step 2: Convert to fraction form
    18,278.32/27,432.84 = 17,126.32/x
  3. Step 3: Cross multiply
    18,278.32x = 27,432.84 × 17,126.32
  4. Step 4: Simplify right side
    18,278.32x = 469,823,596.35
  5. Step 5: Solve for x
    x = 469,823,596.35/18,278.32
  6. Step 6: Final answer
    x = 25,703.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.