Home / 20,165.49-30,248.14-5,172.55

Finding the Fourth Proportional to 20,165.49, 30,248.14 and 5,172.55

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Solution

The fourth proportional to 20,165.49, 30,248.14 and 5,172.55 is: 7,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.49 : 30,248.14 = 5,172.55 : x
  2. Step 2: Convert to fraction form
    20,165.49/30,248.14 = 5,172.55/x
  3. Step 3: Cross multiply
    20,165.49x = 30,248.14 × 5,172.55
  4. Step 4: Simplify right side
    20,165.49x = 156,460,016.56
  5. Step 5: Solve for x
    x = 156,460,016.56/20,165.49
  6. Step 6: Final answer
    x = 7,758.80

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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.