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Finding the Fourth Proportional to 14,580.65, 20,120.18 and 8,611.18

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Solution

The fourth proportional to 14,580.65, 20,120.18 and 8,611.18 is: 11,882.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,580.65 : 20,120.18 = 8,611.18 : x
  2. Step 2: Convert to fraction form
    14,580.65/20,120.18 = 8,611.18/x
  3. Step 3: Cross multiply
    14,580.65x = 20,120.18 × 8,611.18
  4. Step 4: Simplify right side
    14,580.65x = 173,258,398.26
  5. Step 5: Solve for x
    x = 173,258,398.26/14,580.65
  6. Step 6: Final answer
    x = 11,882.76

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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.