Home / 20,031.28-27,645.57-11,647.78

Finding the Fourth Proportional to 20,031.28, 27,645.57 and 11,647.78

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Solution

The fourth proportional to 20,031.28, 27,645.57 and 11,647.78 is: 16,075.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.28 : 27,645.57 = 11,647.78 : x
  2. Step 2: Convert to fraction form
    20,031.28/27,645.57 = 11,647.78/x
  3. Step 3: Cross multiply
    20,031.28x = 27,645.57 × 11,647.78
  4. Step 4: Simplify right side
    20,031.28x = 322,009,517.33
  5. Step 5: Solve for x
    x = 322,009,517.33/20,031.28
  6. Step 6: Final answer
    x = 16,075.33

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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.