Home / 31,878.76-47,815.69-11,102.26

Finding the Fourth Proportional to 31,878.76, 47,815.69 and 11,102.26

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Solution

The fourth proportional to 31,878.76, 47,815.69 and 11,102.26 is: 16,652.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.76 : 47,815.69 = 11,102.26 : x
  2. Step 2: Convert to fraction form
    31,878.76/47,815.69 = 11,102.26/x
  3. Step 3: Cross multiply
    31,878.76x = 47,815.69 × 11,102.26
  4. Step 4: Simplify right side
    31,878.76x = 530,862,222.46
  5. Step 5: Solve for x
    x = 530,862,222.46/31,878.76
  6. Step 6: Final answer
    x = 16,652.54

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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.