Home / 15,131.13-22,679.85-11,421.33

Finding the Fourth Proportional to 15,131.13, 22,679.85 and 11,421.33

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Solution

The fourth proportional to 15,131.13, 22,679.85 and 11,421.33 is: 17,119.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.13 : 22,679.85 = 11,421.33 : x
  2. Step 2: Convert to fraction form
    15,131.13/22,679.85 = 11,421.33/x
  3. Step 3: Cross multiply
    15,131.13x = 22,679.85 × 11,421.33
  4. Step 4: Simplify right side
    15,131.13x = 259,034,051.20
  5. Step 5: Solve for x
    x = 259,034,051.20/15,131.13
  6. Step 6: Final answer
    x = 17,119.28

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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.