Home / 21,040.87-29,046.92-13,085.66

Finding the Fourth Proportional to 21,040.87, 29,046.92 and 13,085.66

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Solution

The fourth proportional to 21,040.87, 29,046.92 and 13,085.66 is: 18,064.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.87 : 29,046.92 = 13,085.66 : x
  2. Step 2: Convert to fraction form
    21,040.87/29,046.92 = 13,085.66/x
  3. Step 3: Cross multiply
    21,040.87x = 29,046.92 × 13,085.66
  4. Step 4: Simplify right side
    21,040.87x = 380,098,119.17
  5. Step 5: Solve for x
    x = 380,098,119.17/21,040.87
  6. Step 6: Final answer
    x = 18,064.75

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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.