Home / 12,249.40-18,374.10-9,770.80

Finding the Fourth Proportional to 12,249.40, 18,374.10 and 9,770.80

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Solution

The fourth proportional to 12,249.40, 18,374.10 and 9,770.80 is: 14,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249.40 : 18,374.10 = 9,770.80 : x
  2. Step 2: Convert to fraction form
    12,249.40/18,374.10 = 9,770.80/x
  3. Step 3: Cross multiply
    12,249.40x = 18,374.10 × 9,770.80
  4. Step 4: Simplify right side
    12,249.40x = 179,529,656.28
  5. Step 5: Solve for x
    x = 179,529,656.28/12,249.40
  6. Step 6: Final answer
    x = 14,656.20

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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.