Home / 12,249.70-18,338.10-7,316.80

Finding the Fourth Proportional to 12,249.70, 18,338.10 and 7,316.80

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Solution

The fourth proportional to 12,249.70, 18,338.10 and 7,316.80 is: 10,953.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249.70 : 18,338.10 = 7,316.80 : x
  2. Step 2: Convert to fraction form
    12,249.70/18,338.10 = 7,316.80/x
  3. Step 3: Cross multiply
    12,249.70x = 18,338.10 × 7,316.80
  4. Step 4: Simplify right side
    12,249.70x = 134,176,210.08
  5. Step 5: Solve for x
    x = 134,176,210.08/12,249.70
  6. Step 6: Final answer
    x = 10,953.43

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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.