Home / 31,878.58-47,817.79-9,691.86

Finding the Fourth Proportional to 31,878.58, 47,817.79 and 9,691.86

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Solution

The fourth proportional to 31,878.58, 47,817.79 and 9,691.86 is: 14,537.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.58 : 47,817.79 = 9,691.86 : x
  2. Step 2: Convert to fraction form
    31,878.58/47,817.79 = 9,691.86/x
  3. Step 3: Cross multiply
    31,878.58x = 47,817.79 × 9,691.86
  4. Step 4: Simplify right side
    31,878.58x = 463,443,326.19
  5. Step 5: Solve for x
    x = 463,443,326.19/31,878.58
  6. Step 6: Final answer
    x = 14,537.77

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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.