Home / 31,828.42-47,742.66-8,454.28

Finding the Fourth Proportional to 31,828.42, 47,742.66 and 8,454.28

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Solution

The fourth proportional to 31,828.42, 47,742.66 and 8,454.28 is: 12,681.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,828.42 : 47,742.66 = 8,454.28 : x
  2. Step 2: Convert to fraction form
    31,828.42/47,742.66 = 8,454.28/x
  3. Step 3: Cross multiply
    31,828.42x = 47,742.66 × 8,454.28
  4. Step 4: Simplify right side
    31,828.42x = 403,629,815.58
  5. Step 5: Solve for x
    x = 403,629,815.58/31,828.42
  6. Step 6: Final answer
    x = 12,681.43

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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.