Home / 13,327.27-18,391.28-8,784.38

Finding the Fourth Proportional to 13,327.27, 18,391.28 and 8,784.38

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Solution

The fourth proportional to 13,327.27, 18,391.28 and 8,784.38 is: 12,122.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327.27 : 18,391.28 = 8,784.38 : x
  2. Step 2: Convert to fraction form
    13,327.27/18,391.28 = 8,784.38/x
  3. Step 3: Cross multiply
    13,327.27x = 18,391.28 × 8,784.38
  4. Step 4: Simplify right side
    13,327.27x = 161,556,060.15
  5. Step 5: Solve for x
    x = 161,556,060.15/13,327.27
  6. Step 6: Final answer
    x = 12,122.22

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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.