Home / 12,743.39-19,119.18-5,345.87

Finding the Fourth Proportional to 12,743.39, 19,119.18 and 5,345.87

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Solution

The fourth proportional to 12,743.39, 19,119.18 and 5,345.87 is: 8,020.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.39 : 19,119.18 = 5,345.87 : x
  2. Step 2: Convert to fraction form
    12,743.39/19,119.18 = 5,345.87/x
  3. Step 3: Cross multiply
    12,743.39x = 19,119.18 × 5,345.87
  4. Step 4: Simplify right side
    12,743.39x = 102,208,555.19
  5. Step 5: Solve for x
    x = 102,208,555.19/12,743.39
  6. Step 6: Final answer
    x = 8,020.52

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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.