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Finding the Fourth Proportional to 20,697.27, 28,562.78 and 11,746.11

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Solution

The fourth proportional to 20,697.27, 28,562.78 and 11,746.11 is: 16,209.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.27 : 28,562.78 = 11,746.11 : x
  2. Step 2: Convert to fraction form
    20,697.27/28,562.78 = 11,746.11/x
  3. Step 3: Cross multiply
    20,697.27x = 28,562.78 × 11,746.11
  4. Step 4: Simplify right side
    20,697.27x = 335,501,626.19
  5. Step 5: Solve for x
    x = 335,501,626.19/20,697.27
  6. Step 6: Final answer
    x = 16,209.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.