Home / 22,651.40-31,259.13-13,218.14

Finding the Fourth Proportional to 22,651.40, 31,259.13 and 13,218.14

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Solution

The fourth proportional to 22,651.40, 31,259.13 and 13,218.14 is: 18,241.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,651.40 : 31,259.13 = 13,218.14 : x
  2. Step 2: Convert to fraction form
    22,651.40/31,259.13 = 13,218.14/x
  3. Step 3: Cross multiply
    22,651.40x = 31,259.13 × 13,218.14
  4. Step 4: Simplify right side
    22,651.40x = 413,187,556.62
  5. Step 5: Solve for x
    x = 413,187,556.62/22,651.40
  6. Step 6: Final answer
    x = 18,241.15

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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.