Home / 21,140.74-29,161.02-13,596.90

Finding the Fourth Proportional to 21,140.74, 29,161.02 and 13,596.90

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Solution

The fourth proportional to 21,140.74, 29,161.02 and 13,596.90 is: 18,755.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.74 : 29,161.02 = 13,596.90 : x
  2. Step 2: Convert to fraction form
    21,140.74/29,161.02 = 13,596.90/x
  3. Step 3: Cross multiply
    21,140.74x = 29,161.02 × 13,596.90
  4. Step 4: Simplify right side
    21,140.74x = 396,499,472.84
  5. Step 5: Solve for x
    x = 396,499,472.84/21,140.74
  6. Step 6: Final answer
    x = 18,755.23

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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.