Home / 20,719.92-31,114.44-13,615.92

Finding the Fourth Proportional to 20,719.92, 31,114.44 and 13,615.92

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Solution

The fourth proportional to 20,719.92, 31,114.44 and 13,615.92 is: 20,446.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.92 : 31,114.44 = 13,615.92 : x
  2. Step 2: Convert to fraction form
    20,719.92/31,114.44 = 13,615.92/x
  3. Step 3: Cross multiply
    20,719.92x = 31,114.44 × 13,615.92
  4. Step 4: Simplify right side
    20,719.92x = 423,651,725.88
  5. Step 5: Solve for x
    x = 423,651,725.88/20,719.92
  6. Step 6: Final answer
    x = 20,446.59

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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.