Home / 21,945.18-32,921.97-11,420.22

Finding the Fourth Proportional to 21,945.18, 32,921.97 and 11,420.22

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Solution

The fourth proportional to 21,945.18, 32,921.97 and 11,420.22 is: 17,132.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,945.18 : 32,921.97 = 11,420.22 : x
  2. Step 2: Convert to fraction form
    21,945.18/32,921.97 = 11,420.22/x
  3. Step 3: Cross multiply
    21,945.18x = 32,921.97 × 11,420.22
  4. Step 4: Simplify right side
    21,945.18x = 375,976,140.23
  5. Step 5: Solve for x
    x = 375,976,140.23/21,945.18
  6. Step 6: Final answer
    x = 17,132.52

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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.