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Finding the Fourth Proportional to 18,863.84, 28,301.90 and 9,001.84

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Solution

The fourth proportional to 18,863.84, 28,301.90 and 9,001.84 is: 13,505.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.84 : 28,301.90 = 9,001.84 : x
  2. Step 2: Convert to fraction form
    18,863.84/28,301.90 = 9,001.84/x
  3. Step 3: Cross multiply
    18,863.84x = 28,301.90 × 9,001.84
  4. Step 4: Simplify right side
    18,863.84x = 254,769,175.50
  5. Step 5: Solve for x
    x = 254,769,175.50/18,863.84
  6. Step 6: Final answer
    x = 13,505.69

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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.