Home / 28,730.80-43,078.56-11,180.20

Finding the Fourth Proportional to 28,730.80, 43,078.56 and 11,180.20

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Solution

The fourth proportional to 28,730.80, 43,078.56 and 11,180.20 is: 16,763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730.80 : 43,078.56 = 11,180.20 : x
  2. Step 2: Convert to fraction form
    28,730.80/43,078.56 = 11,180.20/x
  3. Step 3: Cross multiply
    28,730.80x = 43,078.56 × 11,180.20
  4. Step 4: Simplify right side
    28,730.80x = 481,626,916.51
  5. Step 5: Solve for x
    x = 481,626,916.51/28,730.80
  6. Step 6: Final answer
    x = 16,763.44

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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.