Home / 10,780.24-16,162.30-7,438.95

Finding the Fourth Proportional to 10,780.24, 16,162.30 and 7,438.95

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Solution

The fourth proportional to 10,780.24, 16,162.30 and 7,438.95 is: 11,152.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.24 : 16,162.30 = 7,438.95 : x
  2. Step 2: Convert to fraction form
    10,780.24/16,162.30 = 7,438.95/x
  3. Step 3: Cross multiply
    10,780.24x = 16,162.30 × 7,438.95
  4. Step 4: Simplify right side
    10,780.24x = 120,230,541.59
  5. Step 5: Solve for x
    x = 120,230,541.59/10,780.24
  6. Step 6: Final answer
    x = 11,152.86

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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.