Home / 20,171.19-30,256.08-7,690.75

Finding the Fourth Proportional to 20,171.19, 30,256.08 and 7,690.75

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Solution

The fourth proportional to 20,171.19, 30,256.08 and 7,690.75 is: 11,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.19 : 30,256.08 = 7,690.75 : x
  2. Step 2: Convert to fraction form
    20,171.19/30,256.08 = 7,690.75/x
  3. Step 3: Cross multiply
    20,171.19x = 30,256.08 × 7,690.75
  4. Step 4: Simplify right side
    20,171.19x = 232,691,947.26
  5. Step 5: Solve for x
    x = 232,691,947.26/20,171.19
  6. Step 6: Final answer
    x = 11,535.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.