Home / 11,278.19-15,563.78-6,742.95

Finding the Fourth Proportional to 11,278.19, 15,563.78 and 6,742.95

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Solution

The fourth proportional to 11,278.19, 15,563.78 and 6,742.95 is: 9,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.19 : 15,563.78 = 6,742.95 : x
  2. Step 2: Convert to fraction form
    11,278.19/15,563.78 = 6,742.95/x
  3. Step 3: Cross multiply
    11,278.19x = 15,563.78 × 6,742.95
  4. Step 4: Simplify right side
    11,278.19x = 104,945,756.64
  5. Step 5: Solve for x
    x = 104,945,756.64/11,278.19
  6. Step 6: Final answer
    x = 9,305.20

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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.