Home / 21,817.66-30,104.76-12,863.96

Finding the Fourth Proportional to 21,817.66, 30,104.76 and 12,863.96

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Solution

The fourth proportional to 21,817.66, 30,104.76 and 12,863.96 is: 17,750.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.66 : 30,104.76 = 12,863.96 : x
  2. Step 2: Convert to fraction form
    21,817.66/30,104.76 = 12,863.96/x
  3. Step 3: Cross multiply
    21,817.66x = 30,104.76 × 12,863.96
  4. Step 4: Simplify right side
    21,817.66x = 387,266,428.45
  5. Step 5: Solve for x
    x = 387,266,428.45/21,817.66
  6. Step 6: Final answer
    x = 17,750.14

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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.