Home / 12,135.96-18,209.61-6,289.38

Finding the Fourth Proportional to 12,135.96, 18,209.61 and 6,289.38

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Solution

The fourth proportional to 12,135.96, 18,209.61 and 6,289.38 is: 9,437.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.96 : 18,209.61 = 6,289.38 : x
  2. Step 2: Convert to fraction form
    12,135.96/18,209.61 = 6,289.38/x
  3. Step 3: Cross multiply
    12,135.96x = 18,209.61 × 6,289.38
  4. Step 4: Simplify right side
    12,135.96x = 114,527,156.94
  5. Step 5: Solve for x
    x = 114,527,156.94/12,135.96
  6. Step 6: Final answer
    x = 9,437.01

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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.