Home / 20,551.31-28,360.85-11,476.62

Finding the Fourth Proportional to 20,551.31, 28,360.85 and 11,476.62

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Solution

The fourth proportional to 20,551.31, 28,360.85 and 11,476.62 is: 15,837.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.31 : 28,360.85 = 11,476.62 : x
  2. Step 2: Convert to fraction form
    20,551.31/28,360.85 = 11,476.62/x
  3. Step 3: Cross multiply
    20,551.31x = 28,360.85 × 11,476.62
  4. Step 4: Simplify right side
    20,551.31x = 325,486,747.30
  5. Step 5: Solve for x
    x = 325,486,747.30/20,551.31
  6. Step 6: Final answer
    x = 15,837.76

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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.