Home / 20,534.30-28,337.31-11,102.84

Finding the Fourth Proportional to 20,534.30, 28,337.31 and 11,102.84

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Solution

The fourth proportional to 20,534.30, 28,337.31 and 11,102.84 is: 15,321.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.30 : 28,337.31 = 11,102.84 : x
  2. Step 2: Convert to fraction form
    20,534.30/28,337.31 = 11,102.84/x
  3. Step 3: Cross multiply
    20,534.30x = 28,337.31 × 11,102.84
  4. Step 4: Simplify right side
    20,534.30x = 314,624,618.96
  5. Step 5: Solve for x
    x = 314,624,618.96/20,534.30
  6. Step 6: Final answer
    x = 15,321.91

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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.