Home / 21,965.28-30,310.52-12,402.23

Finding the Fourth Proportional to 21,965.28, 30,310.52 and 12,402.23

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Solution

The fourth proportional to 21,965.28, 30,310.52 and 12,402.23 is: 17,114.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.28 : 30,310.52 = 12,402.23 : x
  2. Step 2: Convert to fraction form
    21,965.28/30,310.52 = 12,402.23/x
  3. Step 3: Cross multiply
    21,965.28x = 30,310.52 × 12,402.23
  4. Step 4: Simplify right side
    21,965.28x = 375,917,826.90
  5. Step 5: Solve for x
    x = 375,917,826.90/21,965.28
  6. Step 6: Final answer
    x = 17,114.18

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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.