Home / 30,833.78-42,540.22-20,073.74

Finding the Fourth Proportional to 30,833.78, 42,540.22 and 20,073.74

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Solution

The fourth proportional to 30,833.78, 42,540.22 and 20,073.74 is: 27,694.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,833.78 : 42,540.22 = 20,073.74 : x
  2. Step 2: Convert to fraction form
    30,833.78/42,540.22 = 20,073.74/x
  3. Step 3: Cross multiply
    30,833.78x = 42,540.22 × 20,073.74
  4. Step 4: Simplify right side
    30,833.78x = 853,941,128.21
  5. Step 5: Solve for x
    x = 853,941,128.21/30,833.78
  6. Step 6: Final answer
    x = 27,694.99

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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.