Home / 12,921.32-19,351.20-8,976.52

Finding the Fourth Proportional to 12,921.32, 19,351.20 and 8,976.52

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Solution

The fourth proportional to 12,921.32, 19,351.20 and 8,976.52 is: 13,443.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.32 : 19,351.20 = 8,976.52 : x
  2. Step 2: Convert to fraction form
    12,921.32/19,351.20 = 8,976.52/x
  3. Step 3: Cross multiply
    12,921.32x = 19,351.20 × 8,976.52
  4. Step 4: Simplify right side
    12,921.32x = 173,706,491.67
  5. Step 5: Solve for x
    x = 173,706,491.67/12,921.32
  6. Step 6: Final answer
    x = 13,443.40

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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.