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Finding the Fourth Proportional to 9,423.12, 12,974.28 and 8,003.80

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Solution

The fourth proportional to 9,423.12, 12,974.28 and 8,003.80 is: 11,020.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,423.12 : 12,974.28 = 8,003.80 : x
  2. Step 2: Convert to fraction form
    9,423.12/12,974.28 = 8,003.80/x
  3. Step 3: Cross multiply
    9,423.12x = 12,974.28 × 8,003.80
  4. Step 4: Simplify right side
    9,423.12x = 103,843,542.26
  5. Step 5: Solve for x
    x = 103,843,542.26/9,423.12
  6. Step 6: Final answer
    x = 11,020.08

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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.