Home / 19,331.82-28,959.28-12,738.02

Finding the Fourth Proportional to 19,331.82, 28,959.28 and 12,738.02

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Solution

The fourth proportional to 19,331.82, 28,959.28 and 12,738.02 is: 19,081.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.82 : 28,959.28 = 12,738.02 : x
  2. Step 2: Convert to fraction form
    19,331.82/28,959.28 = 12,738.02/x
  3. Step 3: Cross multiply
    19,331.82x = 28,959.28 × 12,738.02
  4. Step 4: Simplify right side
    19,331.82x = 368,883,711.18
  5. Step 5: Solve for x
    x = 368,883,711.18/19,331.82
  6. Step 6: Final answer
    x = 19,081.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.