Home / 20,057.43-27,662.44-12,888.51

Finding the Fourth Proportional to 20,057.43, 27,662.44 and 12,888.51

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Solution

The fourth proportional to 20,057.43, 27,662.44 and 12,888.51 is: 17,775.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.43 : 27,662.44 = 12,888.51 : x
  2. Step 2: Convert to fraction form
    20,057.43/27,662.44 = 12,888.51/x
  3. Step 3: Cross multiply
    20,057.43x = 27,662.44 × 12,888.51
  4. Step 4: Simplify right side
    20,057.43x = 356,527,602.34
  5. Step 5: Solve for x
    x = 356,527,602.34/20,057.43
  6. Step 6: Final answer
    x = 17,775.34

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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.