Home / 20,118.98-30,150.68-7,625.75

Finding the Fourth Proportional to 20,118.98, 30,150.68 and 7,625.75

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Solution

The fourth proportional to 20,118.98, 30,150.68 and 7,625.75 is: 11,428.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.98 : 30,150.68 = 7,625.75 : x
  2. Step 2: Convert to fraction form
    20,118.98/30,150.68 = 7,625.75/x
  3. Step 3: Cross multiply
    20,118.98x = 30,150.68 × 7,625.75
  4. Step 4: Simplify right side
    20,118.98x = 229,921,402.02
  5. Step 5: Solve for x
    x = 229,921,402.02/20,118.98
  6. Step 6: Final answer
    x = 11,428.08

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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.