Home / 21,113.72-29,110.46-13,546.70

Finding the Fourth Proportional to 21,113.72, 29,110.46 and 13,546.70

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Solution

The fourth proportional to 21,113.72, 29,110.46 and 13,546.70 is: 18,677.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.72 : 29,110.46 = 13,546.70 : x
  2. Step 2: Convert to fraction form
    21,113.72/29,110.46 = 13,546.70/x
  3. Step 3: Cross multiply
    21,113.72x = 29,110.46 × 13,546.70
  4. Step 4: Simplify right side
    21,113.72x = 394,350,668.48
  5. Step 5: Solve for x
    x = 394,350,668.48/21,113.72
  6. Step 6: Final answer
    x = 18,677.46

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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.