Home / 20,808.59-31,198.30-7,659.25

Finding the Fourth Proportional to 20,808.59, 31,198.30 and 7,659.25

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Solution

The fourth proportional to 20,808.59, 31,198.30 and 7,659.25 is: 11,483.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.59 : 31,198.30 = 7,659.25 : x
  2. Step 2: Convert to fraction form
    20,808.59/31,198.30 = 7,659.25/x
  3. Step 3: Cross multiply
    20,808.59x = 31,198.30 × 7,659.25
  4. Step 4: Simplify right side
    20,808.59x = 238,955,579.28
  5. Step 5: Solve for x
    x = 238,955,579.28/20,808.59
  6. Step 6: Final answer
    x = 11,483.51

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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.