Home / 21,073.74-31,648.20-20,227.08

Finding the Fourth Proportional to 21,073.74, 31,648.20 and 20,227.08

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Solution

The fourth proportional to 21,073.74, 31,648.20 and 20,227.08 is: 30,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.74 : 31,648.20 = 20,227.08 : x
  2. Step 2: Convert to fraction form
    21,073.74/31,648.20 = 20,227.08/x
  3. Step 3: Cross multiply
    21,073.74x = 31,648.20 × 20,227.08
  4. Step 4: Simplify right side
    21,073.74x = 640,150,673.26
  5. Step 5: Solve for x
    x = 640,150,673.26/21,073.74
  6. Step 6: Final answer
    x = 30,376.70

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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.