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Finding the Fourth Proportional to 18,697.27, 28,022.51 and 9,339.90

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Solution

The fourth proportional to 18,697.27, 28,022.51 and 9,339.90 is: 13,998.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.27 : 28,022.51 = 9,339.90 : x
  2. Step 2: Convert to fraction form
    18,697.27/28,022.51 = 9,339.90/x
  3. Step 3: Cross multiply
    18,697.27x = 28,022.51 × 9,339.90
  4. Step 4: Simplify right side
    18,697.27x = 261,727,254.34
  5. Step 5: Solve for x
    x = 261,727,254.34/18,697.27
  6. Step 6: Final answer
    x = 13,998.16

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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.