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Finding the Fourth Proportional to 12,020.73, 17,999.55 and 8,491.65

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Solution

The fourth proportional to 12,020.73, 17,999.55 and 8,491.65 is: 12,715.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.73 : 17,999.55 = 8,491.65 : x
  2. Step 2: Convert to fraction form
    12,020.73/17,999.55 = 8,491.65/x
  3. Step 3: Cross multiply
    12,020.73x = 17,999.55 × 8,491.65
  4. Step 4: Simplify right side
    12,020.73x = 152,845,878.76
  5. Step 5: Solve for x
    x = 152,845,878.76/12,020.73
  6. Step 6: Final answer
    x = 12,715.19

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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.