Home / 20,476.10-28,256.92-11,523.75

Finding the Fourth Proportional to 20,476.10, 28,256.92 and 11,523.75

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Solution

The fourth proportional to 20,476.10, 28,256.92 and 11,523.75 is: 15,902.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,476.10 : 28,256.92 = 11,523.75 : x
  2. Step 2: Convert to fraction form
    20,476.10/28,256.92 = 11,523.75/x
  3. Step 3: Cross multiply
    20,476.10x = 28,256.92 × 11,523.75
  4. Step 4: Simplify right side
    20,476.10x = 325,625,681.85
  5. Step 5: Solve for x
    x = 325,625,681.85/20,476.10
  6. Step 6: Final answer
    x = 15,902.72

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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.