Home / 20,691.40-30,896.39-19,522.04

Finding the Fourth Proportional to 20,691.40, 30,896.39 and 19,522.04

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Solution

The fourth proportional to 20,691.40, 30,896.39 and 19,522.04 is: 29,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.40 : 30,896.39 = 19,522.04 : x
  2. Step 2: Convert to fraction form
    20,691.40/30,896.39 = 19,522.04/x
  3. Step 3: Cross multiply
    20,691.40x = 30,896.39 × 19,522.04
  4. Step 4: Simplify right side
    20,691.40x = 603,160,432.84
  5. Step 5: Solve for x
    x = 603,160,432.84/20,691.40
  6. Step 6: Final answer
    x = 29,150.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.