Home / 39,840.62-54,979.92-21,935.66

Finding the Fourth Proportional to 39,840.62, 54,979.92 and 21,935.66

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Solution

The fourth proportional to 39,840.62, 54,979.92 and 21,935.66 is: 30,271.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,840.62 : 54,979.92 = 21,935.66 : x
  2. Step 2: Convert to fraction form
    39,840.62/54,979.92 = 21,935.66/x
  3. Step 3: Cross multiply
    39,840.62x = 54,979.92 × 21,935.66
  4. Step 4: Simplify right side
    39,840.62x = 1,206,020,557.05
  5. Step 5: Solve for x
    x = 1,206,020,557.05/39,840.62
  6. Step 6: Final answer
    x = 30,271.13

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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.