Home / 12,315.66-18,475.31-4,523.87

Finding the Fourth Proportional to 12,315.66, 18,475.31 and 4,523.87

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Solution

The fourth proportional to 12,315.66, 18,475.31 and 4,523.87 is: 6,786.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.66 : 18,475.31 = 4,523.87 : x
  2. Step 2: Convert to fraction form
    12,315.66/18,475.31 = 4,523.87/x
  3. Step 3: Cross multiply
    12,315.66x = 18,475.31 × 4,523.87
  4. Step 4: Simplify right side
    12,315.66x = 83,579,819.58
  5. Step 5: Solve for x
    x = 83,579,819.58/12,315.66
  6. Step 6: Final answer
    x = 6,786.47

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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.