Home / 12,516.47-18,776.87-3,751.91

Finding the Fourth Proportional to 12,516.47, 18,776.87 and 3,751.91

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Solution

The fourth proportional to 12,516.47, 18,776.87 and 3,751.91 is: 5,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.47 : 18,776.87 = 3,751.91 : x
  2. Step 2: Convert to fraction form
    12,516.47/18,776.87 = 3,751.91/x
  3. Step 3: Cross multiply
    12,516.47x = 18,776.87 × 3,751.91
  4. Step 4: Simplify right side
    12,516.47x = 70,449,126.32
  5. Step 5: Solve for x
    x = 70,449,126.32/12,516.47
  6. Step 6: Final answer
    x = 5,628.51

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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.