Home / 8,899.20-13,345.92-6,439.68

Finding the Fourth Proportional to 8,899.20, 13,345.92 and 6,439.68

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Solution

The fourth proportional to 8,899.20, 13,345.92 and 6,439.68 is: 9,657.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.20 : 13,345.92 = 6,439.68 : x
  2. Step 2: Convert to fraction form
    8,899.20/13,345.92 = 6,439.68/x
  3. Step 3: Cross multiply
    8,899.20x = 13,345.92 × 6,439.68
  4. Step 4: Simplify right side
    8,899.20x = 85,943,454.11
  5. Step 5: Solve for x
    x = 85,943,454.11/8,899.20
  6. Step 6: Final answer
    x = 9,657.44

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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.