Home / 20,556.28-28,381.62-13,494.76

Finding the Fourth Proportional to 20,556.28, 28,381.62 and 13,494.76

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Solution

The fourth proportional to 20,556.28, 28,381.62 and 13,494.76 is: 18,631.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.28 : 28,381.62 = 13,494.76 : x
  2. Step 2: Convert to fraction form
    20,556.28/28,381.62 = 13,494.76/x
  3. Step 3: Cross multiply
    20,556.28x = 28,381.62 × 13,494.76
  4. Step 4: Simplify right side
    20,556.28x = 383,003,150.31
  5. Step 5: Solve for x
    x = 383,003,150.31/20,556.28
  6. Step 6: Final answer
    x = 18,631.93

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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.