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Finding the Fourth Proportional to 39,793.24, 54,913.51 and 21,888.24

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Solution

The fourth proportional to 39,793.24, 54,913.51 and 21,888.24 is: 30,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,793.24 : 54,913.51 = 21,888.24 : x
  2. Step 2: Convert to fraction form
    39,793.24/54,913.51 = 21,888.24/x
  3. Step 3: Cross multiply
    39,793.24x = 54,913.51 × 21,888.24
  4. Step 4: Simplify right side
    39,793.24x = 1,201,960,086.12
  5. Step 5: Solve for x
    x = 1,201,960,086.12/39,793.24
  6. Step 6: Final answer
    x = 30,205.13

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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.