Home / 10,399.40-15,556.14-9,515.33

Finding the Fourth Proportional to 10,399.40, 15,556.14 and 9,515.33

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Solution

The fourth proportional to 10,399.40, 15,556.14 and 9,515.33 is: 14,233.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.40 : 15,556.14 = 9,515.33 : x
  2. Step 2: Convert to fraction form
    10,399.40/15,556.14 = 9,515.33/x
  3. Step 3: Cross multiply
    10,399.40x = 15,556.14 × 9,515.33
  4. Step 4: Simplify right side
    10,399.40x = 148,021,727.85
  5. Step 5: Solve for x
    x = 148,021,727.85/10,399.40
  6. Step 6: Final answer
    x = 14,233.69

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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.