Home / 84,249.36-126,374.40-21,915.36

Finding the Fourth Proportional to 84,249.36, 126,374.40 and 21,915.36

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Solution

The fourth proportional to 84,249.36, 126,374.40 and 21,915.36 is: 32,873.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,249.36 : 126,374.40 = 21,915.36 : x
  2. Step 2: Convert to fraction form
    84,249.36/126,374.40 = 21,915.36/x
  3. Step 3: Cross multiply
    84,249.36x = 126,374.40 × 21,915.36
  4. Step 4: Simplify right side
    84,249.36x = 2,769,540,470.78
  5. Step 5: Solve for x
    x = 2,769,540,470.78/84,249.36
  6. Step 6: Final answer
    x = 32,873.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.