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Finding the Fourth Proportional to 18,766.16, 28,149.22 and 8,900.06

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Solution

The fourth proportional to 18,766.16, 28,149.22 and 8,900.06 is: 13,350.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.16 : 28,149.22 = 8,900.06 : x
  2. Step 2: Convert to fraction form
    18,766.16/28,149.22 = 8,900.06/x
  3. Step 3: Cross multiply
    18,766.16x = 28,149.22 × 8,900.06
  4. Step 4: Simplify right side
    18,766.16x = 250,529,746.95
  5. Step 5: Solve for x
    x = 250,529,746.95/18,766.16
  6. Step 6: Final answer
    x = 13,350.08

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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.