Home / 12,247.20-18,370.80-7,314.30

Finding the Fourth Proportional to 12,247.20, 18,370.80 and 7,314.30

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Solution

The fourth proportional to 12,247.20, 18,370.80 and 7,314.30 is: 10,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.20 : 18,370.80 = 7,314.30 : x
  2. Step 2: Convert to fraction form
    12,247.20/18,370.80 = 7,314.30/x
  3. Step 3: Cross multiply
    12,247.20x = 18,370.80 × 7,314.30
  4. Step 4: Simplify right side
    12,247.20x = 134,369,542.44
  5. Step 5: Solve for x
    x = 134,369,542.44/12,247.20
  6. Step 6: Final answer
    x = 10,971.45

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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.