Home / 20,927.78-28,881.76-11,496.44

Finding the Fourth Proportional to 20,927.78, 28,881.76 and 11,496.44

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Solution

The fourth proportional to 20,927.78, 28,881.76 and 11,496.44 is: 15,865.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.78 : 28,881.76 = 11,496.44 : x
  2. Step 2: Convert to fraction form
    20,927.78/28,881.76 = 11,496.44/x
  3. Step 3: Cross multiply
    20,927.78x = 28,881.76 × 11,496.44
  4. Step 4: Simplify right side
    20,927.78x = 332,037,420.93
  5. Step 5: Solve for x
    x = 332,037,420.93/20,927.78
  6. Step 6: Final answer
    x = 15,865.87

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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.