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Finding the Fourth Proportional to 38,018.70, 56,979.45 and 18,254.70

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Solution

The fourth proportional to 38,018.70, 56,979.45 and 18,254.70 is: 27,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,018.70 : 56,979.45 = 18,254.70 : x
  2. Step 2: Convert to fraction form
    38,018.70/56,979.45 = 18,254.70/x
  3. Step 3: Cross multiply
    38,018.70x = 56,979.45 × 18,254.70
  4. Step 4: Simplify right side
    38,018.70x = 1,040,142,765.92
  5. Step 5: Solve for x
    x = 1,040,142,765.92/38,018.70
  6. Step 6: Final answer
    x = 27,358.71

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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.