Home / 20,253.98-30,360.12-7,770.68

Finding the Fourth Proportional to 20,253.98, 30,360.12 and 7,770.68

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Solution

The fourth proportional to 20,253.98, 30,360.12 and 7,770.68 is: 11,648.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.98 : 30,360.12 = 7,770.68 : x
  2. Step 2: Convert to fraction form
    20,253.98/30,360.12 = 7,770.68/x
  3. Step 3: Cross multiply
    20,253.98x = 30,360.12 × 7,770.68
  4. Step 4: Simplify right side
    20,253.98x = 235,918,777.28
  5. Step 5: Solve for x
    x = 235,918,777.28/20,253.98
  6. Step 6: Final answer
    x = 11,648.02

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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.