Home / 11,180.61-15,429.19-6,400.53

Finding the Fourth Proportional to 11,180.61, 15,429.19 and 6,400.53

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Solution

The fourth proportional to 11,180.61, 15,429.19 and 6,400.53 is: 8,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,180.61 : 15,429.19 = 6,400.53 : x
  2. Step 2: Convert to fraction form
    11,180.61/15,429.19 = 6,400.53/x
  3. Step 3: Cross multiply
    11,180.61x = 15,429.19 × 6,400.53
  4. Step 4: Simplify right side
    11,180.61x = 98,754,993.47
  5. Step 5: Solve for x
    x = 98,754,993.47/11,180.61
  6. Step 6: Final answer
    x = 8,832.70

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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.