Home / 21,209.32-29,273.16-12,257.20

Finding the Fourth Proportional to 21,209.32, 29,273.16 and 12,257.20

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Solution

The fourth proportional to 21,209.32, 29,273.16 and 12,257.20 is: 16,917.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.32 : 29,273.16 = 12,257.20 : x
  2. Step 2: Convert to fraction form
    21,209.32/29,273.16 = 12,257.20/x
  3. Step 3: Cross multiply
    21,209.32x = 29,273.16 × 12,257.20
  4. Step 4: Simplify right side
    21,209.32x = 358,806,976.75
  5. Step 5: Solve for x
    x = 358,806,976.75/21,209.32
  6. Step 6: Final answer
    x = 16,917.42

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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.