Home / 11,421.15-17,131.48-5,265.15

Finding the Fourth Proportional to 11,421.15, 17,131.48 and 5,265.15

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Solution

The fourth proportional to 11,421.15, 17,131.48 and 5,265.15 is: 7,897.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.15 : 17,131.48 = 5,265.15 : x
  2. Step 2: Convert to fraction form
    11,421.15/17,131.48 = 5,265.15/x
  3. Step 3: Cross multiply
    11,421.15x = 17,131.48 × 5,265.15
  4. Step 4: Simplify right side
    11,421.15x = 90,199,811.92
  5. Step 5: Solve for x
    x = 90,199,811.92/11,421.15
  6. Step 6: Final answer
    x = 7,897.61

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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.