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Finding the Fourth Proportional to 18,899.01, 28,373.43 and 11,008.80

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Solution

The fourth proportional to 18,899.01, 28,373.43 and 11,008.80 is: 16,527.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.01 : 28,373.43 = 11,008.80 : x
  2. Step 2: Convert to fraction form
    18,899.01/28,373.43 = 11,008.80/x
  3. Step 3: Cross multiply
    18,899.01x = 28,373.43 × 11,008.80
  4. Step 4: Simplify right side
    18,899.01x = 312,357,416.18
  5. Step 5: Solve for x
    x = 312,357,416.18/18,899.01
  6. Step 6: Final answer
    x = 16,527.71

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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.