Home / 15,172.56-20,940.84-9,207.18

Finding the Fourth Proportional to 15,172.56, 20,940.84 and 9,207.18

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Solution

The fourth proportional to 15,172.56, 20,940.84 and 9,207.18 is: 12,707.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.56 : 20,940.84 = 9,207.18 : x
  2. Step 2: Convert to fraction form
    15,172.56/20,940.84 = 9,207.18/x
  3. Step 3: Cross multiply
    15,172.56x = 20,940.84 × 9,207.18
  4. Step 4: Simplify right side
    15,172.56x = 192,806,083.23
  5. Step 5: Solve for x
    x = 192,806,083.23/15,172.56
  6. Step 6: Final answer
    x = 12,707.55

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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.