Home / 10,891.23-15,038.37-8,369.34

Finding the Fourth Proportional to 10,891.23, 15,038.37 and 8,369.34

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Solution

The fourth proportional to 10,891.23, 15,038.37 and 8,369.34 is: 11,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.23 : 15,038.37 = 8,369.34 : x
  2. Step 2: Convert to fraction form
    10,891.23/15,038.37 = 8,369.34/x
  3. Step 3: Cross multiply
    10,891.23x = 15,038.37 × 8,369.34
  4. Step 4: Simplify right side
    10,891.23x = 125,861,231.58
  5. Step 5: Solve for x
    x = 125,861,231.58/10,891.23
  6. Step 6: Final answer
    x = 11,556.20

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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.