Home / 20,534.21-28,337.14-11,102.77

Finding the Fourth Proportional to 20,534.21, 28,337.14 and 11,102.77

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Solution

The fourth proportional to 20,534.21, 28,337.14 and 11,102.77 is: 15,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.21 : 28,337.14 = 11,102.77 : x
  2. Step 2: Convert to fraction form
    20,534.21/28,337.14 = 11,102.77/x
  3. Step 3: Cross multiply
    20,534.21x = 28,337.14 × 11,102.77
  4. Step 4: Simplify right side
    20,534.21x = 314,620,797.18
  5. Step 5: Solve for x
    x = 314,620,797.18/20,534.21
  6. Step 6: Final answer
    x = 15,321.79

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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.