Home / 10,186.39-15,283.97-5,509.69

Finding the Fourth Proportional to 10,186.39, 15,283.97 and 5,509.69

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Solution

The fourth proportional to 10,186.39, 15,283.97 and 5,509.69 is: 8,266.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.39 : 15,283.97 = 5,509.69 : x
  2. Step 2: Convert to fraction form
    10,186.39/15,283.97 = 5,509.69/x
  3. Step 3: Cross multiply
    10,186.39x = 15,283.97 × 5,509.69
  4. Step 4: Simplify right side
    10,186.39x = 84,209,891.57
  5. Step 5: Solve for x
    x = 84,209,891.57/10,186.39
  6. Step 6: Final answer
    x = 8,266.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.