Home / 18,872.08-28,288.44-6,387.76

Finding the Fourth Proportional to 18,872.08, 28,288.44 and 6,387.76

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Solution

The fourth proportional to 18,872.08, 28,288.44 and 6,387.76 is: 9,574.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.08 : 28,288.44 = 6,387.76 : x
  2. Step 2: Convert to fraction form
    18,872.08/28,288.44 = 6,387.76/x
  3. Step 3: Cross multiply
    18,872.08x = 28,288.44 × 6,387.76
  4. Step 4: Simplify right side
    18,872.08x = 180,699,765.49
  5. Step 5: Solve for x
    x = 180,699,765.49/18,872.08
  6. Step 6: Final answer
    x = 9,574.98

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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.