Home / 11,581.03-15,981.78-6,275.80

Finding the Fourth Proportional to 11,581.03, 15,981.78 and 6,275.80

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Solution

The fourth proportional to 11,581.03, 15,981.78 and 6,275.80 is: 8,660.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,581.03 : 15,981.78 = 6,275.80 : x
  2. Step 2: Convert to fraction form
    11,581.03/15,981.78 = 6,275.80/x
  3. Step 3: Cross multiply
    11,581.03x = 15,981.78 × 6,275.80
  4. Step 4: Simplify right side
    11,581.03x = 100,298,454.92
  5. Step 5: Solve for x
    x = 100,298,454.92/11,581.03
  6. Step 6: Final answer
    x = 8,660.58

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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.