Home / 28,279.32-42,424.44-10,747.78

Finding the Fourth Proportional to 28,279.32, 42,424.44 and 10,747.78

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Solution

The fourth proportional to 28,279.32, 42,424.44 and 10,747.78 is: 16,123.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.32 : 42,424.44 = 10,747.78 : x
  2. Step 2: Convert to fraction form
    28,279.32/42,424.44 = 10,747.78/x
  3. Step 3: Cross multiply
    28,279.32x = 42,424.44 × 10,747.78
  4. Step 4: Simplify right side
    28,279.32x = 455,968,508.15
  5. Step 5: Solve for x
    x = 455,968,508.15/28,279.32
  6. Step 6: Final answer
    x = 16,123.75

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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.