Home / 12,189.72-18,273.63-4,396.71

Finding the Fourth Proportional to 12,189.72, 18,273.63 and 4,396.71

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Solution

The fourth proportional to 12,189.72, 18,273.63 and 4,396.71 is: 6,591.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.72 : 18,273.63 = 4,396.71 : x
  2. Step 2: Convert to fraction form
    12,189.72/18,273.63 = 4,396.71/x
  3. Step 3: Cross multiply
    12,189.72x = 18,273.63 × 4,396.71
  4. Step 4: Simplify right side
    12,189.72x = 80,343,851.76
  5. Step 5: Solve for x
    x = 80,343,851.76/12,189.72
  6. Step 6: Final answer
    x = 6,591.12

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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.