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Finding the Fourth Proportional to 21,807.10, 30,092.08 and 12,375.66

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Solution

The fourth proportional to 21,807.10, 30,092.08 and 12,375.66 is: 17,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807.10 : 30,092.08 = 12,375.66 : x
  2. Step 2: Convert to fraction form
    21,807.10/30,092.08 = 12,375.66/x
  3. Step 3: Cross multiply
    21,807.10x = 30,092.08 × 12,375.66
  4. Step 4: Simplify right side
    21,807.10x = 372,409,350.77
  5. Step 5: Solve for x
    x = 372,409,350.77/21,807.10
  6. Step 6: Final answer
    x = 17,077.44

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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.