Home / 12,219.92-18,335.07-8,275.62

Finding the Fourth Proportional to 12,219.92, 18,335.07 and 8,275.62

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Solution

The fourth proportional to 12,219.92, 18,335.07 and 8,275.62 is: 12,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.92 : 18,335.07 = 8,275.62 : x
  2. Step 2: Convert to fraction form
    12,219.92/18,335.07 = 8,275.62/x
  3. Step 3: Cross multiply
    12,219.92x = 18,335.07 × 8,275.62
  4. Step 4: Simplify right side
    12,219.92x = 151,734,071.99
  5. Step 5: Solve for x
    x = 151,734,071.99/12,219.92
  6. Step 6: Final answer
    x = 12,416.95

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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.