Home / 11,573.89-15,960.78-9,781.41

Finding the Fourth Proportional to 11,573.89, 15,960.78 and 9,781.41

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Solution

The fourth proportional to 11,573.89, 15,960.78 and 9,781.41 is: 13,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,573.89 : 15,960.78 = 9,781.41 : x
  2. Step 2: Convert to fraction form
    11,573.89/15,960.78 = 9,781.41/x
  3. Step 3: Cross multiply
    11,573.89x = 15,960.78 × 9,781.41
  4. Step 4: Simplify right side
    11,573.89x = 156,118,944.44
  5. Step 5: Solve for x
    x = 156,118,944.44/11,573.89
  6. Step 6: Final answer
    x = 13,488.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.