Home / 35,345.91-48,780.72-20,239.77

Finding the Fourth Proportional to 35,345.91, 48,780.72 and 20,239.77

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Solution

The fourth proportional to 35,345.91, 48,780.72 and 20,239.77 is: 27,932.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,345.91 : 48,780.72 = 20,239.77 : x
  2. Step 2: Convert to fraction form
    35,345.91/48,780.72 = 20,239.77/x
  3. Step 3: Cross multiply
    35,345.91x = 48,780.72 × 20,239.77
  4. Step 4: Simplify right side
    35,345.91x = 987,310,553.23
  5. Step 5: Solve for x
    x = 987,310,553.23/35,345.91
  6. Step 6: Final answer
    x = 27,932.81

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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.