Home / 13,218.86-18,236.66-9,019.82

Finding the Fourth Proportional to 13,218.86, 18,236.66 and 9,019.82

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Solution

The fourth proportional to 13,218.86, 18,236.66 and 9,019.82 is: 12,443.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.86 : 18,236.66 = 9,019.82 : x
  2. Step 2: Convert to fraction form
    13,218.86/18,236.66 = 9,019.82/x
  3. Step 3: Cross multiply
    13,218.86x = 18,236.66 × 9,019.82
  4. Step 4: Simplify right side
    13,218.86x = 164,491,390.60
  5. Step 5: Solve for x
    x = 164,491,390.60/13,218.86
  6. Step 6: Final answer
    x = 12,443.69

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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.