Home / 12,237.72-18,357.80-3,915.65

Finding the Fourth Proportional to 12,237.72, 18,357.80 and 3,915.65

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Solution

The fourth proportional to 12,237.72, 18,357.80 and 3,915.65 is: 5,873.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.72 : 18,357.80 = 3,915.65 : x
  2. Step 2: Convert to fraction form
    12,237.72/18,357.80 = 3,915.65/x
  3. Step 3: Cross multiply
    12,237.72x = 18,357.80 × 3,915.65
  4. Step 4: Simplify right side
    12,237.72x = 71,882,608.20
  5. Step 5: Solve for x
    x = 71,882,608.20/12,237.72
  6. Step 6: Final answer
    x = 5,873.86

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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.