Home / 20,218.88-27,887.20-13,045.15

Finding the Fourth Proportional to 20,218.88, 27,887.20 and 13,045.15

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Solution

The fourth proportional to 20,218.88, 27,887.20 and 13,045.15 is: 17,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.88 : 27,887.20 = 13,045.15 : x
  2. Step 2: Convert to fraction form
    20,218.88/27,887.20 = 13,045.15/x
  3. Step 3: Cross multiply
    20,218.88x = 27,887.20 × 13,045.15
  4. Step 4: Simplify right side
    20,218.88x = 363,792,567.64
  5. Step 5: Solve for x
    x = 363,792,567.64/20,218.88
  6. Step 6: Final answer
    x = 17,992.72

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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.