Home / 21,999.06-30,363.66-18,456.12

Finding the Fourth Proportional to 21,999.06, 30,363.66 and 18,456.12

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Solution

The fourth proportional to 21,999.06, 30,363.66 and 18,456.12 is: 25,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.06 : 30,363.66 = 18,456.12 : x
  2. Step 2: Convert to fraction form
    21,999.06/30,363.66 = 18,456.12/x
  3. Step 3: Cross multiply
    21,999.06x = 30,363.66 × 18,456.12
  4. Step 4: Simplify right side
    21,999.06x = 560,395,352.60
  5. Step 5: Solve for x
    x = 560,395,352.60/21,999.06
  6. Step 6: Final answer
    x = 25,473.60

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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.