Home / 23,123.06-31,909.70-12,512.68

Finding the Fourth Proportional to 23,123.06, 31,909.70 and 12,512.68

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Solution

The fourth proportional to 23,123.06, 31,909.70 and 12,512.68 is: 17,267.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,123.06 : 31,909.70 = 12,512.68 : x
  2. Step 2: Convert to fraction form
    23,123.06/31,909.70 = 12,512.68/x
  3. Step 3: Cross multiply
    23,123.06x = 31,909.70 × 12,512.68
  4. Step 4: Simplify right side
    23,123.06x = 399,275,865.00
  5. Step 5: Solve for x
    x = 399,275,865.00/23,123.06
  6. Step 6: Final answer
    x = 17,267.43

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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.