Home / 42,279.68-63,414.72-11,117.36

Finding the Fourth Proportional to 42,279.68, 63,414.72 and 11,117.36

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Solution

The fourth proportional to 42,279.68, 63,414.72 and 11,117.36 is: 16,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,279.68 : 63,414.72 = 11,117.36 : x
  2. Step 2: Convert to fraction form
    42,279.68/63,414.72 = 11,117.36/x
  3. Step 3: Cross multiply
    42,279.68x = 63,414.72 × 11,117.36
  4. Step 4: Simplify right side
    42,279.68x = 705,004,271.54
  5. Step 5: Solve for x
    x = 705,004,271.54/42,279.68
  6. Step 6: Final answer
    x = 16,674.78

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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.