Home / 12,138.12-18,240.12-6,595.56

Finding the Fourth Proportional to 12,138.12, 18,240.12 and 6,595.56

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Solution

The fourth proportional to 12,138.12, 18,240.12 and 6,595.56 is: 9,911.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.12 : 18,240.12 = 6,595.56 : x
  2. Step 2: Convert to fraction form
    12,138.12/18,240.12 = 6,595.56/x
  3. Step 3: Cross multiply
    12,138.12x = 18,240.12 × 6,595.56
  4. Step 4: Simplify right side
    12,138.12x = 120,303,805.87
  5. Step 5: Solve for x
    x = 120,303,805.87/12,138.12
  6. Step 6: Final answer
    x = 9,911.24

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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.