Home / 12,212.61-18,318.86-5,191.53

Finding the Fourth Proportional to 12,212.61, 18,318.86 and 5,191.53

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Solution

The fourth proportional to 12,212.61, 18,318.86 and 5,191.53 is: 7,787.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.61 : 18,318.86 = 5,191.53 : x
  2. Step 2: Convert to fraction form
    12,212.61/18,318.86 = 5,191.53/x
  3. Step 3: Cross multiply
    12,212.61x = 18,318.86 × 5,191.53
  4. Step 4: Simplify right side
    12,212.61x = 95,102,836.07
  5. Step 5: Solve for x
    x = 95,102,836.07/12,212.61
  6. Step 6: Final answer
    x = 7,787.27

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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.