Home / 10,891.33-15,038.50-8,369.47

Finding the Fourth Proportional to 10,891.33, 15,038.50 and 8,369.47

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Solution

The fourth proportional to 10,891.33, 15,038.50 and 8,369.47 is: 11,556.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.33 : 15,038.50 = 8,369.47 : x
  2. Step 2: Convert to fraction form
    10,891.33/15,038.50 = 8,369.47/x
  3. Step 3: Cross multiply
    10,891.33x = 15,038.50 × 8,369.47
  4. Step 4: Simplify right side
    10,891.33x = 125,864,274.60
  5. Step 5: Solve for x
    x = 125,864,274.60/10,891.33
  6. Step 6: Final answer
    x = 11,556.37

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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.