Home / 21,454.28-29,608.54-12,381.26

Finding the Fourth Proportional to 21,454.28, 29,608.54 and 12,381.26

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Solution

The fourth proportional to 21,454.28, 29,608.54 and 12,381.26 is: 17,087.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.28 : 29,608.54 = 12,381.26 : x
  2. Step 2: Convert to fraction form
    21,454.28/29,608.54 = 12,381.26/x
  3. Step 3: Cross multiply
    21,454.28x = 29,608.54 × 12,381.26
  4. Step 4: Simplify right side
    21,454.28x = 366,591,031.96
  5. Step 5: Solve for x
    x = 366,591,031.96/21,454.28
  6. Step 6: Final answer
    x = 17,087.08

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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.