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Finding the Fourth Proportional to 12,118.59, 18,155.61 and 6,563.61

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Solution

The fourth proportional to 12,118.59, 18,155.61 and 6,563.61 is: 9,833.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.59 : 18,155.61 = 6,563.61 : x
  2. Step 2: Convert to fraction form
    12,118.59/18,155.61 = 6,563.61/x
  3. Step 3: Cross multiply
    12,118.59x = 18,155.61 × 6,563.61
  4. Step 4: Simplify right side
    12,118.59x = 119,166,343.35
  5. Step 5: Solve for x
    x = 119,166,343.35/12,118.59
  6. Step 6: Final answer
    x = 9,833.35

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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.