Home / 20,250.68-27,938.48-12,697.31

Finding the Fourth Proportional to 20,250.68, 27,938.48 and 12,697.31

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Solution

The fourth proportional to 20,250.68, 27,938.48 and 12,697.31 is: 17,517.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.68 : 27,938.48 = 12,697.31 : x
  2. Step 2: Convert to fraction form
    20,250.68/27,938.48 = 12,697.31/x
  3. Step 3: Cross multiply
    20,250.68x = 27,938.48 × 12,697.31
  4. Step 4: Simplify right side
    20,250.68x = 354,743,547.85
  5. Step 5: Solve for x
    x = 354,743,547.85/20,250.68
  6. Step 6: Final answer
    x = 17,517.62

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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.