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Finding the Fourth Proportional to 22,387.64, 30,895.07 and 12,317.13

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Solution

The fourth proportional to 22,387.64, 30,895.07 and 12,317.13 is: 16,997.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,387.64 : 30,895.07 = 12,317.13 : x
  2. Step 2: Convert to fraction form
    22,387.64/30,895.07 = 12,317.13/x
  3. Step 3: Cross multiply
    22,387.64x = 30,895.07 × 12,317.13
  4. Step 4: Simplify right side
    22,387.64x = 380,538,531.96
  5. Step 5: Solve for x
    x = 380,538,531.96/22,387.64
  6. Step 6: Final answer
    x = 16,997.71

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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.