Home / 22,686.14-31,330.79-20,212.40

Finding the Fourth Proportional to 22,686.14, 31,330.79 and 20,212.40

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Solution

The fourth proportional to 22,686.14, 31,330.79 and 20,212.40 is: 27,914.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,686.14 : 31,330.79 = 20,212.40 : x
  2. Step 2: Convert to fraction form
    22,686.14/31,330.79 = 20,212.40/x
  3. Step 3: Cross multiply
    22,686.14x = 31,330.79 × 20,212.40
  4. Step 4: Simplify right side
    22,686.14x = 633,270,202.08
  5. Step 5: Solve for x
    x = 633,270,202.08/22,686.14
  6. Step 6: Final answer
    x = 27,914.42

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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.