Home / 25,883.81-35,717.19-15,131.20

Finding the Fourth Proportional to 25,883.81, 35,717.19 and 15,131.20

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Solution

The fourth proportional to 25,883.81, 35,717.19 and 15,131.20 is: 20,879.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,883.81 : 35,717.19 = 15,131.20 : x
  2. Step 2: Convert to fraction form
    25,883.81/35,717.19 = 15,131.20/x
  3. Step 3: Cross multiply
    25,883.81x = 35,717.19 × 15,131.20
  4. Step 4: Simplify right side
    25,883.81x = 540,443,691.09
  5. Step 5: Solve for x
    x = 540,443,691.09/25,883.81
  6. Step 6: Final answer
    x = 20,879.61

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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.