Home / 21,939.17-30,277.45-12,375.62

Finding the Fourth Proportional to 21,939.17, 30,277.45 and 12,375.62

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Solution

The fourth proportional to 21,939.17, 30,277.45 and 12,375.62 is: 17,079.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.17 : 30,277.45 = 12,375.62 : x
  2. Step 2: Convert to fraction form
    21,939.17/30,277.45 = 12,375.62/x
  3. Step 3: Cross multiply
    21,939.17x = 30,277.45 × 12,375.62
  4. Step 4: Simplify right side
    21,939.17x = 374,702,193.39
  5. Step 5: Solve for x
    x = 374,702,193.39/21,939.17
  6. Step 6: Final answer
    x = 17,079.15

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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.