Home / 10,518.58-15,776.34-3,121.66

Finding the Fourth Proportional to 10,518.58, 15,776.34 and 3,121.66

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Solution

The fourth proportional to 10,518.58, 15,776.34 and 3,121.66 is: 4,682.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.58 : 15,776.34 = 3,121.66 : x
  2. Step 2: Convert to fraction form
    10,518.58/15,776.34 = 3,121.66/x
  3. Step 3: Cross multiply
    10,518.58x = 15,776.34 × 3,121.66
  4. Step 4: Simplify right side
    10,518.58x = 49,248,369.52
  5. Step 5: Solve for x
    x = 49,248,369.52/10,518.58
  6. Step 6: Final answer
    x = 4,682.04

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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.