Home / 31,878.78-47,823.96-13,148.60

Finding the Fourth Proportional to 31,878.78, 47,823.96 and 13,148.60

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Solution

The fourth proportional to 31,878.78, 47,823.96 and 13,148.60 is: 19,725.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.78 : 47,823.96 = 13,148.60 : x
  2. Step 2: Convert to fraction form
    31,878.78/47,823.96 = 13,148.60/x
  3. Step 3: Cross multiply
    31,878.78x = 47,823.96 × 13,148.60
  4. Step 4: Simplify right side
    31,878.78x = 628,818,120.46
  5. Step 5: Solve for x
    x = 628,818,120.46/31,878.78
  6. Step 6: Final answer
    x = 19,725.29

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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.