Home / 21,868.92-30,178.58-12,436.88

Finding the Fourth Proportional to 21,868.92, 30,178.58 and 12,436.88

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Solution

The fourth proportional to 21,868.92, 30,178.58 and 12,436.88 is: 17,162.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.92 : 30,178.58 = 12,436.88 : x
  2. Step 2: Convert to fraction form
    21,868.92/30,178.58 = 12,436.88/x
  3. Step 3: Cross multiply
    21,868.92x = 30,178.58 × 12,436.88
  4. Step 4: Simplify right side
    21,868.92x = 375,327,164.95
  5. Step 5: Solve for x
    x = 375,327,164.95/21,868.92
  6. Step 6: Final answer
    x = 17,162.58

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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.