Home / 20,621.80-30,934.32-5,830.48

Finding the Fourth Proportional to 20,621.80, 30,934.32 and 5,830.48

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Solution

The fourth proportional to 20,621.80, 30,934.32 and 5,830.48 is: 8,746.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.80 : 30,934.32 = 5,830.48 : x
  2. Step 2: Convert to fraction form
    20,621.80/30,934.32 = 5,830.48/x
  3. Step 3: Cross multiply
    20,621.80x = 30,934.32 × 5,830.48
  4. Step 4: Simplify right side
    20,621.80x = 180,361,934.07
  5. Step 5: Solve for x
    x = 180,361,934.07/20,621.80
  6. Step 6: Final answer
    x = 8,746.18

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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.