Home / 12,306.24-16,980.36-8,112

Finding the Fourth Proportional to 12,306.24, 16,980.36 and 8,112

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Solution

The fourth proportional to 12,306.24, 16,980.36 and 8,112 is: 11,193.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.24 : 16,980.36 = 8,112 : x
  2. Step 2: Convert to fraction form
    12,306.24/16,980.36 = 8,112/x
  3. Step 3: Cross multiply
    12,306.24x = 16,980.36 × 8,112
  4. Step 4: Simplify right side
    12,306.24x = 137,744,680.32
  5. Step 5: Solve for x
    x = 137,744,680.32/12,306.24
  6. Step 6: Final answer
    x = 11,193.08

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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.