Home / 21,107.52-29,166.84-20,082.60

Finding the Fourth Proportional to 21,107.52, 29,166.84 and 20,082.60

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Solution

The fourth proportional to 21,107.52, 29,166.84 and 20,082.60 is: 27,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.52 : 29,166.84 = 20,082.60 : x
  2. Step 2: Convert to fraction form
    21,107.52/29,166.84 = 20,082.60/x
  3. Step 3: Cross multiply
    21,107.52x = 29,166.84 × 20,082.60
  4. Step 4: Simplify right side
    21,107.52x = 585,745,980.98
  5. Step 5: Solve for x
    x = 585,745,980.98/21,107.52
  6. Step 6: Final answer
    x = 27,750.58

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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.