Home / 19,145.43-28,732.19-12,569.31

Finding the Fourth Proportional to 19,145.43, 28,732.19 and 12,569.31

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Solution

The fourth proportional to 19,145.43, 28,732.19 and 12,569.31 is: 18,863.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.43 : 28,732.19 = 12,569.31 : x
  2. Step 2: Convert to fraction form
    19,145.43/28,732.19 = 12,569.31/x
  3. Step 3: Cross multiply
    19,145.43x = 28,732.19 × 12,569.31
  4. Step 4: Simplify right side
    19,145.43x = 361,143,740.24
  5. Step 5: Solve for x
    x = 361,143,740.24/19,145.43
  6. Step 6: Final answer
    x = 18,863.18

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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.