Home / 20,143.88-27,790.80-14,851.28

Finding the Fourth Proportional to 20,143.88, 27,790.80 and 14,851.28

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Solution

The fourth proportional to 20,143.88, 27,790.80 and 14,851.28 is: 20,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.88 : 27,790.80 = 14,851.28 : x
  2. Step 2: Convert to fraction form
    20,143.88/27,790.80 = 14,851.28/x
  3. Step 3: Cross multiply
    20,143.88x = 27,790.80 × 14,851.28
  4. Step 4: Simplify right side
    20,143.88x = 412,728,952.22
  5. Step 5: Solve for x
    x = 412,728,952.22/20,143.88
  6. Step 6: Final answer
    x = 20,489.05

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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.