Home / 20,218.30-27,897.93-11,263.78

Finding the Fourth Proportional to 20,218.30, 27,897.93 and 11,263.78

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Solution

The fourth proportional to 20,218.30, 27,897.93 and 11,263.78 is: 15,542.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.30 : 27,897.93 = 11,263.78 : x
  2. Step 2: Convert to fraction form
    20,218.30/27,897.93 = 11,263.78/x
  3. Step 3: Cross multiply
    20,218.30x = 27,897.93 × 11,263.78
  4. Step 4: Simplify right side
    20,218.30x = 314,236,145.98
  5. Step 5: Solve for x
    x = 314,236,145.98/20,218.30
  6. Step 6: Final answer
    x = 15,542.16

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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.