Home / 9,867.36-13,616.53-5,390.90

Finding the Fourth Proportional to 9,867.36, 13,616.53 and 5,390.90

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Solution

The fourth proportional to 9,867.36, 13,616.53 and 5,390.90 is: 7,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.36 : 13,616.53 = 5,390.90 : x
  2. Step 2: Convert to fraction form
    9,867.36/13,616.53 = 5,390.90/x
  3. Step 3: Cross multiply
    9,867.36x = 13,616.53 × 5,390.90
  4. Step 4: Simplify right side
    9,867.36x = 73,405,351.58
  5. Step 5: Solve for x
    x = 73,405,351.58/9,867.36
  6. Step 6: Final answer
    x = 7,439.21

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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.