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Finding the Fourth Proportional to 12,480.66, 17,219.16 and 8,233.83

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Solution

The fourth proportional to 12,480.66, 17,219.16 and 8,233.83 is: 11,359.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.66 : 17,219.16 = 8,233.83 : x
  2. Step 2: Convert to fraction form
    12,480.66/17,219.16 = 8,233.83/x
  3. Step 3: Cross multiply
    12,480.66x = 17,219.16 × 8,233.83
  4. Step 4: Simplify right side
    12,480.66x = 141,779,636.18
  5. Step 5: Solve for x
    x = 141,779,636.18/12,480.66
  6. Step 6: Final answer
    x = 11,359.95

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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.