Home / 12,971.92-17,876.28-9,429.52

Finding the Fourth Proportional to 12,971.92, 17,876.28 and 9,429.52

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Solution

The fourth proportional to 12,971.92, 17,876.28 and 9,429.52 is: 12,994.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.92 : 17,876.28 = 9,429.52 : x
  2. Step 2: Convert to fraction form
    12,971.92/17,876.28 = 9,429.52/x
  3. Step 3: Cross multiply
    12,971.92x = 17,876.28 × 9,429.52
  4. Step 4: Simplify right side
    12,971.92x = 168,564,739.79
  5. Step 5: Solve for x
    x = 168,564,739.79/12,971.92
  6. Step 6: Final answer
    x = 12,994.59

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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.