Home / 12,456.57-18,717.15-9,365.70

Finding the Fourth Proportional to 12,456.57, 18,717.15 and 9,365.70

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Solution

The fourth proportional to 12,456.57, 18,717.15 and 9,365.70 is: 14,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.57 : 18,717.15 = 9,365.70 : x
  2. Step 2: Convert to fraction form
    12,456.57/18,717.15 = 9,365.70/x
  3. Step 3: Cross multiply
    12,456.57x = 18,717.15 × 9,365.70
  4. Step 4: Simplify right side
    12,456.57x = 175,299,211.76
  5. Step 5: Solve for x
    x = 175,299,211.76/12,456.57
  6. Step 6: Final answer
    x = 14,072.83

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1.5x scale

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.