Home / 11,581.14-15,981.95-6,275.94

Finding the Fourth Proportional to 11,581.14, 15,981.95 and 6,275.94

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Solution

The fourth proportional to 11,581.14, 15,981.95 and 6,275.94 is: 8,660.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,581.14 : 15,981.95 = 6,275.94 : x
  2. Step 2: Convert to fraction form
    11,581.14/15,981.95 = 6,275.94/x
  3. Step 3: Cross multiply
    11,581.14x = 15,981.95 × 6,275.94
  4. Step 4: Simplify right side
    11,581.14x = 100,301,759.28
  5. Step 5: Solve for x
    x = 100,301,759.28/11,581.14
  6. Step 6: Final answer
    x = 8,660.78

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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.