Home / 21,867.57-30,172.10-16,215.39

Finding the Fourth Proportional to 21,867.57, 30,172.10 and 16,215.39

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Solution

The fourth proportional to 21,867.57, 30,172.10 and 16,215.39 is: 22,373.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.57 : 30,172.10 = 16,215.39 : x
  2. Step 2: Convert to fraction form
    21,867.57/30,172.10 = 16,215.39/x
  3. Step 3: Cross multiply
    21,867.57x = 30,172.10 × 16,215.39
  4. Step 4: Simplify right side
    21,867.57x = 489,252,287.54
  5. Step 5: Solve for x
    x = 489,252,287.54/21,867.57
  6. Step 6: Final answer
    x = 22,373.42

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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.