Home / 20,854.77-31,282.26-5,272.41

Finding the Fourth Proportional to 20,854.77, 31,282.26 and 5,272.41

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Solution

The fourth proportional to 20,854.77, 31,282.26 and 5,272.41 is: 7,908.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.77 : 31,282.26 = 5,272.41 : x
  2. Step 2: Convert to fraction form
    20,854.77/31,282.26 = 5,272.41/x
  3. Step 3: Cross multiply
    20,854.77x = 31,282.26 × 5,272.41
  4. Step 4: Simplify right side
    20,854.77x = 164,932,900.45
  5. Step 5: Solve for x
    x = 164,932,900.45/20,854.77
  6. Step 6: Final answer
    x = 7,908.64

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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.