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Finding the Fourth Proportional to 12,479.67, 18,712.22 and 8,537.00

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Solution

The fourth proportional to 12,479.67, 18,712.22 and 8,537.00 is: 12,800.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.67 : 18,712.22 = 8,537.00 : x
  2. Step 2: Convert to fraction form
    12,479.67/18,712.22 = 8,537.00/x
  3. Step 3: Cross multiply
    12,479.67x = 18,712.22 × 8,537.00
  4. Step 4: Simplify right side
    12,479.67x = 159,746,085.89
  5. Step 5: Solve for x
    x = 159,746,085.89/12,479.67
  6. Step 6: Final answer
    x = 12,800.51

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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.