Home / 31,878.64-47,824.44-11,103.76

Finding the Fourth Proportional to 31,878.64, 47,824.44 and 11,103.76

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Solution

The fourth proportional to 31,878.64, 47,824.44 and 11,103.76 is: 16,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.64 : 47,824.44 = 11,103.76 : x
  2. Step 2: Convert to fraction form
    31,878.64/47,824.44 = 11,103.76/x
  3. Step 3: Cross multiply
    31,878.64x = 47,824.44 × 11,103.76
  4. Step 4: Simplify right side
    31,878.64x = 531,031,103.89
  5. Step 5: Solve for x
    x = 531,031,103.89/31,878.64
  6. Step 6: Final answer
    x = 16,657.90

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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.