Home / 12,340.74-17,031.60-7,864.68

Finding the Fourth Proportional to 12,340.74, 17,031.60 and 7,864.68

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Solution

The fourth proportional to 12,340.74, 17,031.60 and 7,864.68 is: 10,854.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.74 : 17,031.60 = 7,864.68 : x
  2. Step 2: Convert to fraction form
    12,340.74/17,031.60 = 7,864.68/x
  3. Step 3: Cross multiply
    12,340.74x = 17,031.60 × 7,864.68
  4. Step 4: Simplify right side
    12,340.74x = 133,948,083.89
  5. Step 5: Solve for x
    x = 133,948,083.89/12,340.74
  6. Step 6: Final answer
    x = 10,854.14

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1.5x scale

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.