Home / 9,681.21-13,367.60-7,439.55

Finding the Fourth Proportional to 9,681.21, 13,367.60 and 7,439.55

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Solution

The fourth proportional to 9,681.21, 13,367.60 and 7,439.55 is: 10,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,681.21 : 13,367.60 = 7,439.55 : x
  2. Step 2: Convert to fraction form
    9,681.21/13,367.60 = 7,439.55/x
  3. Step 3: Cross multiply
    9,681.21x = 13,367.60 × 7,439.55
  4. Step 4: Simplify right side
    9,681.21x = 99,448,891.38
  5. Step 5: Solve for x
    x = 99,448,891.38/9,681.21
  6. Step 6: Final answer
    x = 10,272.36

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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.