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Finding the Fourth Proportional to 18,113.32, 27,169.92 and 4,965.80

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Solution

The fourth proportional to 18,113.32, 27,169.92 and 4,965.80 is: 7,448.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.32 : 27,169.92 = 4,965.80 : x
  2. Step 2: Convert to fraction form
    18,113.32/27,169.92 = 4,965.80/x
  3. Step 3: Cross multiply
    18,113.32x = 27,169.92 × 4,965.80
  4. Step 4: Simplify right side
    18,113.32x = 134,920,388.74
  5. Step 5: Solve for x
    x = 134,920,388.74/18,113.32
  6. Step 6: Final answer
    x = 7,448.68

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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.