Home / 23,100.19-31,878.26-12,489.82

Finding the Fourth Proportional to 23,100.19, 31,878.26 and 12,489.82

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Solution

The fourth proportional to 23,100.19, 31,878.26 and 12,489.82 is: 17,235.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,100.19 : 31,878.26 = 12,489.82 : x
  2. Step 2: Convert to fraction form
    23,100.19/31,878.26 = 12,489.82/x
  3. Step 3: Cross multiply
    23,100.19x = 31,878.26 × 12,489.82
  4. Step 4: Simplify right side
    23,100.19x = 398,153,723.66
  5. Step 5: Solve for x
    x = 398,153,723.66/23,100.19
  6. Step 6: Final answer
    x = 17,235.95

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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.