Home / 20,687.09-31,046.22-15,154.59

Finding the Fourth Proportional to 20,687.09, 31,046.22 and 15,154.59

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Solution

The fourth proportional to 20,687.09, 31,046.22 and 15,154.59 is: 22,743.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.09 : 31,046.22 = 15,154.59 : x
  2. Step 2: Convert to fraction form
    20,687.09/31,046.22 = 15,154.59/x
  3. Step 3: Cross multiply
    20,687.09x = 31,046.22 × 15,154.59
  4. Step 4: Simplify right side
    20,687.09x = 470,492,735.15
  5. Step 5: Solve for x
    x = 470,492,735.15/20,687.09
  6. Step 6: Final answer
    x = 22,743.31

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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.