Home / 20,220-27,903.22-11,267.31

Finding the Fourth Proportional to 20,220, 27,903.22 and 11,267.31

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Solution

The fourth proportional to 20,220, 27,903.22 and 11,267.31 is: 15,548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220 : 27,903.22 = 11,267.31 : x
  2. Step 2: Convert to fraction form
    20,220/27,903.22 = 11,267.31/x
  3. Step 3: Cross multiply
    20,220x = 27,903.22 × 11,267.31
  4. Step 4: Simplify right side
    20,220x = 314,394,229.74
  5. Step 5: Solve for x
    x = 314,394,229.74/20,220
  6. Step 6: Final answer
    x = 15,548.68

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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.