Home / 20,645.52-31,018.92-13,253.04

Finding the Fourth Proportional to 20,645.52, 31,018.92 and 13,253.04

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Solution

The fourth proportional to 20,645.52, 31,018.92 and 13,253.04 is: 19,912.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.52 : 31,018.92 = 13,253.04 : x
  2. Step 2: Convert to fraction form
    20,645.52/31,018.92 = 13,253.04/x
  3. Step 3: Cross multiply
    20,645.52x = 31,018.92 × 13,253.04
  4. Step 4: Simplify right side
    20,645.52x = 411,094,987.52
  5. Step 5: Solve for x
    x = 411,094,987.52/20,645.52
  6. Step 6: Final answer
    x = 19,912.07

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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.