Home / 20,294.14-30,440.16-7,146.60

Finding the Fourth Proportional to 20,294.14, 30,440.16 and 7,146.60

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Solution

The fourth proportional to 20,294.14, 30,440.16 and 7,146.60 is: 10,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.14 : 30,440.16 = 7,146.60 : x
  2. Step 2: Convert to fraction form
    20,294.14/30,440.16 = 7,146.60/x
  3. Step 3: Cross multiply
    20,294.14x = 30,440.16 × 7,146.60
  4. Step 4: Simplify right side
    20,294.14x = 217,543,647.46
  5. Step 5: Solve for x
    x = 217,543,647.46/20,294.14
  6. Step 6: Final answer
    x = 10,719.53

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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.