Home / 12,555.47-18,821.23-4,231.19

Finding the Fourth Proportional to 12,555.47, 18,821.23 and 4,231.19

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Solution

The fourth proportional to 12,555.47, 18,821.23 and 4,231.19 is: 6,342.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.47 : 18,821.23 = 4,231.19 : x
  2. Step 2: Convert to fraction form
    12,555.47/18,821.23 = 4,231.19/x
  3. Step 3: Cross multiply
    12,555.47x = 18,821.23 × 4,231.19
  4. Step 4: Simplify right side
    12,555.47x = 79,636,236.64
  5. Step 5: Solve for x
    x = 79,636,236.64/12,555.47
  6. Step 6: Final answer
    x = 6,342.75

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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.