Home / 12,306.40-16,982.56-6,717.40

Finding the Fourth Proportional to 12,306.40, 16,982.56 and 6,717.40

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Solution

The fourth proportional to 12,306.40, 16,982.56 and 6,717.40 is: 9,269.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.40 : 16,982.56 = 6,717.40 : x
  2. Step 2: Convert to fraction form
    12,306.40/16,982.56 = 6,717.40/x
  3. Step 3: Cross multiply
    12,306.40x = 16,982.56 × 6,717.40
  4. Step 4: Simplify right side
    12,306.40x = 114,078,648.54
  5. Step 5: Solve for x
    x = 114,078,648.54/12,306.40
  6. Step 6: Final answer
    x = 9,269.86

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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.