Home / 20,141.80-27,799.66-12,869.24

Finding the Fourth Proportional to 20,141.80, 27,799.66 and 12,869.24

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Solution

The fourth proportional to 20,141.80, 27,799.66 and 12,869.24 is: 17,762.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.80 : 27,799.66 = 12,869.24 : x
  2. Step 2: Convert to fraction form
    20,141.80/27,799.66 = 12,869.24/x
  3. Step 3: Cross multiply
    20,141.80x = 27,799.66 × 12,869.24
  4. Step 4: Simplify right side
    20,141.80x = 357,760,496.46
  5. Step 5: Solve for x
    x = 357,760,496.46/20,141.80
  6. Step 6: Final answer
    x = 17,762.09

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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.