Home / 11,280.24-15,563.88-8,480.88

Finding the Fourth Proportional to 11,280.24, 15,563.88 and 8,480.88

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Solution

The fourth proportional to 11,280.24, 15,563.88 and 8,480.88 is: 11,701.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.24 : 15,563.88 = 8,480.88 : x
  2. Step 2: Convert to fraction form
    11,280.24/15,563.88 = 8,480.88/x
  3. Step 3: Cross multiply
    11,280.24x = 15,563.88 × 8,480.88
  4. Step 4: Simplify right side
    11,280.24x = 131,995,398.61
  5. Step 5: Solve for x
    x = 131,995,398.61/11,280.24
  6. Step 6: Final answer
    x = 11,701.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.