Home / 35,815.46-53,649.36-20,979.41

Finding the Fourth Proportional to 35,815.46, 53,649.36 and 20,979.41

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Solution

The fourth proportional to 35,815.46, 53,649.36 and 20,979.41 is: 31,425.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,815.46 : 53,649.36 = 20,979.41 : x
  2. Step 2: Convert to fraction form
    35,815.46/53,649.36 = 20,979.41/x
  3. Step 3: Cross multiply
    35,815.46x = 53,649.36 × 20,979.41
  4. Step 4: Simplify right side
    35,815.46x = 1,125,531,651.43
  5. Step 5: Solve for x
    x = 1,125,531,651.43/35,815.46
  6. Step 6: Final answer
    x = 31,425.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.