Home / 11,240.36-15,515.25-6,988.91

Finding the Fourth Proportional to 11,240.36, 15,515.25 and 6,988.91

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Solution

The fourth proportional to 11,240.36, 15,515.25 and 6,988.91 is: 9,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,240.36 : 15,515.25 = 6,988.91 : x
  2. Step 2: Convert to fraction form
    11,240.36/15,515.25 = 6,988.91/x
  3. Step 3: Cross multiply
    11,240.36x = 15,515.25 × 6,988.91
  4. Step 4: Simplify right side
    11,240.36x = 108,434,608.30
  5. Step 5: Solve for x
    x = 108,434,608.30/11,240.36
  6. Step 6: Final answer
    x = 9,646.90

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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.