Home / 9,015.44-12,439.88-5,429.52

Finding the Fourth Proportional to 9,015.44, 12,439.88 and 5,429.52

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Solution

The fourth proportional to 9,015.44, 12,439.88 and 5,429.52 is: 7,491.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,015.44 : 12,439.88 = 5,429.52 : x
  2. Step 2: Convert to fraction form
    9,015.44/12,439.88 = 5,429.52/x
  3. Step 3: Cross multiply
    9,015.44x = 12,439.88 × 5,429.52
  4. Step 4: Simplify right side
    9,015.44x = 67,542,550.11
  5. Step 5: Solve for x
    x = 67,542,550.11/9,015.44
  6. Step 6: Final answer
    x = 7,491.88

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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.