Home / 12,235.88-18,353.57-3,915.90

Finding the Fourth Proportional to 12,235.88, 18,353.57 and 3,915.90

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Solution

The fourth proportional to 12,235.88, 18,353.57 and 3,915.90 is: 5,873.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.88 : 18,353.57 = 3,915.90 : x
  2. Step 2: Convert to fraction form
    12,235.88/18,353.57 = 3,915.90/x
  3. Step 3: Cross multiply
    12,235.88x = 18,353.57 × 3,915.90
  4. Step 4: Simplify right side
    12,235.88x = 71,870,744.76
  5. Step 5: Solve for x
    x = 71,870,744.76/12,235.88
  6. Step 6: Final answer
    x = 5,873.77

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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.