Home / 12,384.11-18,574.53-3,619.91

Finding the Fourth Proportional to 12,384.11, 18,574.53 and 3,619.91

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Solution

The fourth proportional to 12,384.11, 18,574.53 and 3,619.91 is: 5,429.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.11 : 18,574.53 = 3,619.91 : x
  2. Step 2: Convert to fraction form
    12,384.11/18,574.53 = 3,619.91/x
  3. Step 3: Cross multiply
    12,384.11x = 18,574.53 × 3,619.91
  4. Step 4: Simplify right side
    12,384.11x = 67,238,034.02
  5. Step 5: Solve for x
    x = 67,238,034.02/12,384.11
  6. Step 6: Final answer
    x = 5,429.38

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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.