Home / 10,891.20-16,335.36-4,319.04

Finding the Fourth Proportional to 10,891.20, 16,335.36 and 4,319.04

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Solution

The fourth proportional to 10,891.20, 16,335.36 and 4,319.04 is: 6,477.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.20 : 16,335.36 = 4,319.04 : x
  2. Step 2: Convert to fraction form
    10,891.20/16,335.36 = 4,319.04/x
  3. Step 3: Cross multiply
    10,891.20x = 16,335.36 × 4,319.04
  4. Step 4: Simplify right side
    10,891.20x = 70,553,073.25
  5. Step 5: Solve for x
    x = 70,553,073.25/10,891.20
  6. Step 6: Final answer
    x = 6,477.99

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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.