Home / 35,490.88-48,979.92-20,386

Finding the Fourth Proportional to 35,490.88, 48,979.92 and 20,386

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Solution

The fourth proportional to 35,490.88, 48,979.92 and 20,386 is: 28,134.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,490.88 : 48,979.92 = 20,386 : x
  2. Step 2: Convert to fraction form
    35,490.88/48,979.92 = 20,386/x
  3. Step 3: Cross multiply
    35,490.88x = 48,979.92 × 20,386
  4. Step 4: Simplify right side
    35,490.88x = 998,504,649.12
  5. Step 5: Solve for x
    x = 998,504,649.12/35,490.88
  6. Step 6: Final answer
    x = 28,134.12

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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.