Home / 30,423.78-41,937.19-27,979.81

Finding the Fourth Proportional to 30,423.78, 41,937.19 and 27,979.81

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Solution

The fourth proportional to 30,423.78, 41,937.19 and 27,979.81 is: 38,568.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,423.78 : 41,937.19 = 27,979.81 : x
  2. Step 2: Convert to fraction form
    30,423.78/41,937.19 = 27,979.81/x
  3. Step 3: Cross multiply
    30,423.78x = 41,937.19 × 27,979.81
  4. Step 4: Simplify right side
    30,423.78x = 1,173,394,433.34
  5. Step 5: Solve for x
    x = 1,173,394,433.34/30,423.78
  6. Step 6: Final answer
    x = 38,568.33

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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.