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Finding the Fourth Proportional to 18,805.52, 28,199.16 and 11,017.04

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Solution

The fourth proportional to 18,805.52, 28,199.16 and 11,017.04 is: 16,520.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.52 : 28,199.16 = 11,017.04 : x
  2. Step 2: Convert to fraction form
    18,805.52/28,199.16 = 11,017.04/x
  3. Step 3: Cross multiply
    18,805.52x = 28,199.16 × 11,017.04
  4. Step 4: Simplify right side
    18,805.52x = 310,671,273.69
  5. Step 5: Solve for x
    x = 310,671,273.69/18,805.52
  6. Step 6: Final answer
    x = 16,520.22

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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.