Home / 20,256.68-27,945.60-12,697.86

Finding the Fourth Proportional to 20,256.68, 27,945.60 and 12,697.86

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Solution

The fourth proportional to 20,256.68, 27,945.60 and 12,697.86 is: 17,517.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,256.68 : 27,945.60 = 12,697.86 : x
  2. Step 2: Convert to fraction form
    20,256.68/27,945.60 = 12,697.86/x
  3. Step 3: Cross multiply
    20,256.68x = 27,945.60 × 12,697.86
  4. Step 4: Simplify right side
    20,256.68x = 354,849,316.42
  5. Step 5: Solve for x
    x = 354,849,316.42/20,256.68
  6. Step 6: Final answer
    x = 17,517.64

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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.