Home / 13,339.18-18,416.66-8,561.19

Finding the Fourth Proportional to 13,339.18, 18,416.66 and 8,561.19

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Solution

The fourth proportional to 13,339.18, 18,416.66 and 8,561.19 is: 11,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.18 : 18,416.66 = 8,561.19 : x
  2. Step 2: Convert to fraction form
    13,339.18/18,416.66 = 8,561.19/x
  3. Step 3: Cross multiply
    13,339.18x = 18,416.66 × 8,561.19
  4. Step 4: Simplify right side
    13,339.18x = 157,668,390.54
  5. Step 5: Solve for x
    x = 157,668,390.54/13,339.18
  6. Step 6: Final answer
    x = 11,819.95

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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.