Home / 23,123.16-31,909.80-12,512.64

Finding the Fourth Proportional to 23,123.16, 31,909.80 and 12,512.64

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Solution

The fourth proportional to 23,123.16, 31,909.80 and 12,512.64 is: 17,267.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,123.16 : 31,909.80 = 12,512.64 : x
  2. Step 2: Convert to fraction form
    23,123.16/31,909.80 = 12,512.64/x
  3. Step 3: Cross multiply
    23,123.16x = 31,909.80 × 12,512.64
  4. Step 4: Simplify right side
    23,123.16x = 399,275,839.87
  5. Step 5: Solve for x
    x = 399,275,839.87/23,123.16
  6. Step 6: Final answer
    x = 17,267.36

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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.