Home / 11,561.52-15,954.35-6,780.81

Finding the Fourth Proportional to 11,561.52, 15,954.35 and 6,780.81

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Solution

The fourth proportional to 11,561.52, 15,954.35 and 6,780.81 is: 9,357.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,561.52 : 15,954.35 = 6,780.81 : x
  2. Step 2: Convert to fraction form
    11,561.52/15,954.35 = 6,780.81/x
  3. Step 3: Cross multiply
    11,561.52x = 15,954.35 × 6,780.81
  4. Step 4: Simplify right side
    11,561.52x = 108,183,382.12
  5. Step 5: Solve for x
    x = 108,183,382.12/11,561.52
  6. Step 6: Final answer
    x = 9,357.19

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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.