Home / 12,015.80-18,023.70-5,756.75

Finding the Fourth Proportional to 12,015.80, 18,023.70 and 5,756.75

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Solution

The fourth proportional to 12,015.80, 18,023.70 and 5,756.75 is: 8,635.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.80 : 18,023.70 = 5,756.75 : x
  2. Step 2: Convert to fraction form
    12,015.80/18,023.70 = 5,756.75/x
  3. Step 3: Cross multiply
    12,015.80x = 18,023.70 × 5,756.75
  4. Step 4: Simplify right side
    12,015.80x = 103,757,934.98
  5. Step 5: Solve for x
    x = 103,757,934.98/12,015.80
  6. Step 6: Final answer
    x = 8,635.13

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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.