Home / 31,678.62-43,712.68-18,254.28

Finding the Fourth Proportional to 31,678.62, 43,712.68 and 18,254.28

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Solution

The fourth proportional to 31,678.62, 43,712.68 and 18,254.28 is: 25,188.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.62 : 43,712.68 = 18,254.28 : x
  2. Step 2: Convert to fraction form
    31,678.62/43,712.68 = 18,254.28/x
  3. Step 3: Cross multiply
    31,678.62x = 43,712.68 × 18,254.28
  4. Step 4: Simplify right side
    31,678.62x = 797,943,500.27
  5. Step 5: Solve for x
    x = 797,943,500.27/31,678.62
  6. Step 6: Final answer
    x = 25,188.71

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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.