Home / 22,556.88-31,128.24-13,486.40

Finding the Fourth Proportional to 22,556.88, 31,128.24 and 13,486.40

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Solution

The fourth proportional to 22,556.88, 31,128.24 and 13,486.40 is: 18,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,556.88 : 31,128.24 = 13,486.40 : x
  2. Step 2: Convert to fraction form
    22,556.88/31,128.24 = 13,486.40/x
  3. Step 3: Cross multiply
    22,556.88x = 31,128.24 × 13,486.40
  4. Step 4: Simplify right side
    22,556.88x = 419,807,895.94
  5. Step 5: Solve for x
    x = 419,807,895.94/22,556.88
  6. Step 6: Final answer
    x = 18,611.08

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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.