Home / 18,728.34-28,089.99-5,578.26

Finding the Fourth Proportional to 18,728.34, 28,089.99 and 5,578.26

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Solution

The fourth proportional to 18,728.34, 28,089.99 and 5,578.26 is: 8,366.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.34 : 28,089.99 = 5,578.26 : x
  2. Step 2: Convert to fraction form
    18,728.34/28,089.99 = 5,578.26/x
  3. Step 3: Cross multiply
    18,728.34x = 28,089.99 × 5,578.26
  4. Step 4: Simplify right side
    18,728.34x = 156,693,267.62
  5. Step 5: Solve for x
    x = 156,693,267.62/18,728.34
  6. Step 6: Final answer
    x = 8,366.64

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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.