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Finding the Fourth Proportional to 22,891.80, 31,979.40 and 22,891.80

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Solution

The fourth proportional to 22,891.80, 31,979.40 and 22,891.80 is: 31,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,891.80 : 31,979.40 = 22,891.80 : x
  2. Step 2: Convert to fraction form
    22,891.80/31,979.40 = 22,891.80/x
  3. Step 3: Cross multiply
    22,891.80x = 31,979.40 × 22,891.80
  4. Step 4: Simplify right side
    22,891.80x = 732,066,028.92
  5. Step 5: Solve for x
    x = 732,066,028.92/22,891.80
  6. Step 6: Final answer
    x = 31,979.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.