Home / 20,754.72-31,132.08-17,670.56

Finding the Fourth Proportional to 20,754.72, 31,132.08 and 17,670.56

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Solution

The fourth proportional to 20,754.72, 31,132.08 and 17,670.56 is: 26,505.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.72 : 31,132.08 = 17,670.56 : x
  2. Step 2: Convert to fraction form
    20,754.72/31,132.08 = 17,670.56/x
  3. Step 3: Cross multiply
    20,754.72x = 31,132.08 × 17,670.56
  4. Step 4: Simplify right side
    20,754.72x = 550,121,287.56
  5. Step 5: Solve for x
    x = 550,121,287.56/20,754.72
  6. Step 6: Final answer
    x = 26,505.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.