Home / 21,281.97-29,367.71-12,327.88

Finding the Fourth Proportional to 21,281.97, 29,367.71 and 12,327.88

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Solution

The fourth proportional to 21,281.97, 29,367.71 and 12,327.88 is: 17,011.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.97 : 29,367.71 = 12,327.88 : x
  2. Step 2: Convert to fraction form
    21,281.97/29,367.71 = 12,327.88/x
  3. Step 3: Cross multiply
    21,281.97x = 29,367.71 × 12,327.88
  4. Step 4: Simplify right side
    21,281.97x = 362,041,640.33
  5. Step 5: Solve for x
    x = 362,041,640.33/21,281.97
  6. Step 6: Final answer
    x = 17,011.66

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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.