Home / 21,451.08-32,029.89-19,215.48

Finding the Fourth Proportional to 21,451.08, 32,029.89 and 19,215.48

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Solution

The fourth proportional to 21,451.08, 32,029.89 and 19,215.48 is: 28,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.08 : 32,029.89 = 19,215.48 : x
  2. Step 2: Convert to fraction form
    21,451.08/32,029.89 = 19,215.48/x
  3. Step 3: Cross multiply
    21,451.08x = 32,029.89 × 19,215.48
  4. Step 4: Simplify right side
    21,451.08x = 615,469,710.70
  5. Step 5: Solve for x
    x = 615,469,710.70/21,451.08
  6. Step 6: Final answer
    x = 28,691.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.