Home / 21,512.39-29,686.65-11,952.30

Finding the Fourth Proportional to 21,512.39, 29,686.65 and 11,952.30

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Solution

The fourth proportional to 21,512.39, 29,686.65 and 11,952.30 is: 16,493.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.39 : 29,686.65 = 11,952.30 : x
  2. Step 2: Convert to fraction form
    21,512.39/29,686.65 = 11,952.30/x
  3. Step 3: Cross multiply
    21,512.39x = 29,686.65 × 11,952.30
  4. Step 4: Simplify right side
    21,512.39x = 354,823,596.16
  5. Step 5: Solve for x
    x = 354,823,596.16/21,512.39
  6. Step 6: Final answer
    x = 16,493.92

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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.