Home / 20,648.70-28,494.36-11,217.06

Finding the Fourth Proportional to 20,648.70, 28,494.36 and 11,217.06

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Solution

The fourth proportional to 20,648.70, 28,494.36 and 11,217.06 is: 15,479.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.70 : 28,494.36 = 11,217.06 : x
  2. Step 2: Convert to fraction form
    20,648.70/28,494.36 = 11,217.06/x
  3. Step 3: Cross multiply
    20,648.70x = 28,494.36 × 11,217.06
  4. Step 4: Simplify right side
    20,648.70x = 319,622,945.78
  5. Step 5: Solve for x
    x = 319,622,945.78/20,648.70
  6. Step 6: Final answer
    x = 15,479.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.