Home / 31,929.85-47,878.14-11,922.89

Finding the Fourth Proportional to 31,929.85, 47,878.14 and 11,922.89

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Solution

The fourth proportional to 31,929.85, 47,878.14 and 11,922.89 is: 17,878.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,929.85 : 47,878.14 = 11,922.89 : x
  2. Step 2: Convert to fraction form
    31,929.85/47,878.14 = 11,922.89/x
  3. Step 3: Cross multiply
    31,929.85x = 47,878.14 × 11,922.89
  4. Step 4: Simplify right side
    31,929.85x = 570,845,871.26
  5. Step 5: Solve for x
    x = 570,845,871.26/31,929.85
  6. Step 6: Final answer
    x = 17,878.12

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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.