Home / 13,561.02-18,716.10-8,183.76

Finding the Fourth Proportional to 13,561.02, 18,716.10 and 8,183.76

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Solution

The fourth proportional to 13,561.02, 18,716.10 and 8,183.76 is: 11,294.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.02 : 18,716.10 = 8,183.76 : x
  2. Step 2: Convert to fraction form
    13,561.02/18,716.10 = 8,183.76/x
  3. Step 3: Cross multiply
    13,561.02x = 18,716.10 × 8,183.76
  4. Step 4: Simplify right side
    13,561.02x = 153,168,070.54
  5. Step 5: Solve for x
    x = 153,168,070.54/13,561.02
  6. Step 6: Final answer
    x = 11,294.73

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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.