Home / 18,940.30-28,411.80-5,792.65

Finding the Fourth Proportional to 18,940.30, 28,411.80 and 5,792.65

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Solution

The fourth proportional to 18,940.30, 28,411.80 and 5,792.65 is: 8,689.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.30 : 28,411.80 = 5,792.65 : x
  2. Step 2: Convert to fraction form
    18,940.30/28,411.80 = 5,792.65/x
  3. Step 3: Cross multiply
    18,940.30x = 28,411.80 × 5,792.65
  4. Step 4: Simplify right side
    18,940.30x = 164,579,613.27
  5. Step 5: Solve for x
    x = 164,579,613.27/18,940.30
  6. Step 6: Final answer
    x = 8,689.39

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1.5x scale

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.