Home / 11,435.28-15,780.66-6,722.28

Finding the Fourth Proportional to 11,435.28, 15,780.66 and 6,722.28

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Solution

The fourth proportional to 11,435.28, 15,780.66 and 6,722.28 is: 9,276.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,435.28 : 15,780.66 = 6,722.28 : x
  2. Step 2: Convert to fraction form
    11,435.28/15,780.66 = 6,722.28/x
  3. Step 3: Cross multiply
    11,435.28x = 15,780.66 × 6,722.28
  4. Step 4: Simplify right side
    11,435.28x = 106,082,015.10
  5. Step 5: Solve for x
    x = 106,082,015.10/11,435.28
  6. Step 6: Final answer
    x = 9,276.73

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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.