Home / 42,279.81-63,414.67-11,117.49

Finding the Fourth Proportional to 42,279.81, 63,414.67 and 11,117.49

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Solution

The fourth proportional to 42,279.81, 63,414.67 and 11,117.49 is: 16,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,279.81 : 63,414.67 = 11,117.49 : x
  2. Step 2: Convert to fraction form
    42,279.81/63,414.67 = 11,117.49/x
  3. Step 3: Cross multiply
    42,279.81x = 63,414.67 × 11,117.49
  4. Step 4: Simplify right side
    42,279.81x = 705,011,959.58
  5. Step 5: Solve for x
    x = 705,011,959.58/42,279.81
  6. Step 6: Final answer
    x = 16,674.91

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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.