Home / 11,229.44-15,479.52-7,681.64

Finding the Fourth Proportional to 11,229.44, 15,479.52 and 7,681.64

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Solution

The fourth proportional to 11,229.44, 15,479.52 and 7,681.64 is: 10,588.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,229.44 : 15,479.52 = 7,681.64 : x
  2. Step 2: Convert to fraction form
    11,229.44/15,479.52 = 7,681.64/x
  3. Step 3: Cross multiply
    11,229.44x = 15,479.52 × 7,681.64
  4. Step 4: Simplify right side
    11,229.44x = 118,908,100.01
  5. Step 5: Solve for x
    x = 118,908,100.01/11,229.44
  6. Step 6: Final answer
    x = 10,588.96

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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.