Home / 20,057.40-27,665.04-13,339.66

Finding the Fourth Proportional to 20,057.40, 27,665.04 and 13,339.66

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Solution

The fourth proportional to 20,057.40, 27,665.04 and 13,339.66 is: 18,399.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.40 : 27,665.04 = 13,339.66 : x
  2. Step 2: Convert to fraction form
    20,057.40/27,665.04 = 13,339.66/x
  3. Step 3: Cross multiply
    20,057.40x = 27,665.04 × 13,339.66
  4. Step 4: Simplify right side
    20,057.40x = 369,042,227.49
  5. Step 5: Solve for x
    x = 369,042,227.49/20,057.40
  6. Step 6: Final answer
    x = 18,399.31

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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.