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Finding the Fourth Proportional to 11,870.73, 17,812.29 and 8,610.73

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Solution

The fourth proportional to 11,870.73, 17,812.29 and 8,610.73 is: 12,920.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,870.73 : 17,812.29 = 8,610.73 : x
  2. Step 2: Convert to fraction form
    11,870.73/17,812.29 = 8,610.73/x
  3. Step 3: Cross multiply
    11,870.73x = 17,812.29 × 8,610.73
  4. Step 4: Simplify right side
    11,870.73x = 153,376,819.87
  5. Step 5: Solve for x
    x = 153,376,819.87/11,870.73
  6. Step 6: Final answer
    x = 12,920.59

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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.