Home / 20,761.02-31,112.34-9,049.68

Finding the Fourth Proportional to 20,761.02, 31,112.34 and 9,049.68

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Solution

The fourth proportional to 20,761.02, 31,112.34 and 9,049.68 is: 13,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.02 : 31,112.34 = 9,049.68 : x
  2. Step 2: Convert to fraction form
    20,761.02/31,112.34 = 9,049.68/x
  3. Step 3: Cross multiply
    20,761.02x = 31,112.34 × 9,049.68
  4. Step 4: Simplify right side
    20,761.02x = 281,556,721.05
  5. Step 5: Solve for x
    x = 281,556,721.05/20,761.02
  6. Step 6: Final answer
    x = 13,561.80

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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.