Home / 12,303.70-18,456.45-3,538.69

Finding the Fourth Proportional to 12,303.70, 18,456.45 and 3,538.69

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Solution

The fourth proportional to 12,303.70, 18,456.45 and 3,538.69 is: 5,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.70 : 18,456.45 = 3,538.69 : x
  2. Step 2: Convert to fraction form
    12,303.70/18,456.45 = 3,538.69/x
  3. Step 3: Cross multiply
    12,303.70x = 18,456.45 × 3,538.69
  4. Step 4: Simplify right side
    12,303.70x = 65,311,655.05
  5. Step 5: Solve for x
    x = 65,311,655.05/12,303.70
  6. Step 6: Final answer
    x = 5,308.29

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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.