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Finding the Fourth Proportional to 18,872.96, 28,266.32 and 9,019.12

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Solution

The fourth proportional to 18,872.96, 28,266.32 and 9,019.12 is: 13,508.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.96 : 28,266.32 = 9,019.12 : x
  2. Step 2: Convert to fraction form
    18,872.96/28,266.32 = 9,019.12/x
  3. Step 3: Cross multiply
    18,872.96x = 28,266.32 × 9,019.12
  4. Step 4: Simplify right side
    18,872.96x = 254,937,332.04
  5. Step 5: Solve for x
    x = 254,937,332.04/18,872.96
  6. Step 6: Final answer
    x = 13,508.07

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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.