Home / 23,100.33-31,878.45-12,489.96

Finding the Fourth Proportional to 23,100.33, 31,878.45 and 12,489.96

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Solution

The fourth proportional to 23,100.33, 31,878.45 and 12,489.96 is: 17,236.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,100.33 : 31,878.45 = 12,489.96 : x
  2. Step 2: Convert to fraction form
    23,100.33/31,878.45 = 12,489.96/x
  3. Step 3: Cross multiply
    23,100.33x = 31,878.45 × 12,489.96
  4. Step 4: Simplify right side
    23,100.33x = 398,160,565.36
  5. Step 5: Solve for x
    x = 398,160,565.36/23,100.33
  6. Step 6: Final answer
    x = 17,236.14

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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.