Home / 31,890.60-47,835.90-11,109.24

Finding the Fourth Proportional to 31,890.60, 47,835.90 and 11,109.24

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Solution

The fourth proportional to 31,890.60, 47,835.90 and 11,109.24 is: 16,663.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,890.60 : 47,835.90 = 11,109.24 : x
  2. Step 2: Convert to fraction form
    31,890.60/47,835.90 = 11,109.24/x
  3. Step 3: Cross multiply
    31,890.60x = 47,835.90 × 11,109.24
  4. Step 4: Simplify right side
    31,890.60x = 531,420,493.72
  5. Step 5: Solve for x
    x = 531,420,493.72/31,890.60
  6. Step 6: Final answer
    x = 16,663.86

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1.5x scale

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.