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Finding the Fourth Proportional to 11,990.52, 17,989.29 and 6,151.20

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Solution

The fourth proportional to 11,990.52, 17,989.29 and 6,151.20 is: 9,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.52 : 17,989.29 = 6,151.20 : x
  2. Step 2: Convert to fraction form
    11,990.52/17,989.29 = 6,151.20/x
  3. Step 3: Cross multiply
    11,990.52x = 17,989.29 × 6,151.20
  4. Step 4: Simplify right side
    11,990.52x = 110,655,720.65
  5. Step 5: Solve for x
    x = 110,655,720.65/11,990.52
  6. Step 6: Final answer
    x = 9,228.60

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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.