Home / 20,852.76-28,776.28-11,654.39

Finding the Fourth Proportional to 20,852.76, 28,776.28 and 11,654.39

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Solution

The fourth proportional to 20,852.76, 28,776.28 and 11,654.39 is: 16,082.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.76 : 28,776.28 = 11,654.39 : x
  2. Step 2: Convert to fraction form
    20,852.76/28,776.28 = 11,654.39/x
  3. Step 3: Cross multiply
    20,852.76x = 28,776.28 × 11,654.39
  4. Step 4: Simplify right side
    20,852.76x = 335,369,989.87
  5. Step 5: Solve for x
    x = 335,369,989.87/20,852.76
  6. Step 6: Final answer
    x = 16,082.76

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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.