Home / 21,079.09-29,049.19-15,100.48

Finding the Fourth Proportional to 21,079.09, 29,049.19 and 15,100.48

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Solution

The fourth proportional to 21,079.09, 29,049.19 and 15,100.48 is: 20,810.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.09 : 29,049.19 = 15,100.48 : x
  2. Step 2: Convert to fraction form
    21,079.09/29,049.19 = 15,100.48/x
  3. Step 3: Cross multiply
    21,079.09x = 29,049.19 × 15,100.48
  4. Step 4: Simplify right side
    21,079.09x = 438,656,712.61
  5. Step 5: Solve for x
    x = 438,656,712.61/21,079.09
  6. Step 6: Final answer
    x = 20,810.04

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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.