Home / 9,867.26-13,616.64-5,390.91

Finding the Fourth Proportional to 9,867.26, 13,616.64 and 5,390.91

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Solution

The fourth proportional to 9,867.26, 13,616.64 and 5,390.91 is: 7,439.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.26 : 13,616.64 = 5,390.91 : x
  2. Step 2: Convert to fraction form
    9,867.26/13,616.64 = 5,390.91/x
  3. Step 3: Cross multiply
    9,867.26x = 13,616.64 × 5,390.91
  4. Step 4: Simplify right side
    9,867.26x = 73,406,080.74
  5. Step 5: Solve for x
    x = 73,406,080.74/9,867.26
  6. Step 6: Final answer
    x = 7,439.36

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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.