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Finding the Fourth Proportional to 18,883.90, 28,329.90 and 5,737.60

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Solution

The fourth proportional to 18,883.90, 28,329.90 and 5,737.60 is: 8,607.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.90 : 28,329.90 = 5,737.60 : x
  2. Step 2: Convert to fraction form
    18,883.90/28,329.90 = 5,737.60/x
  3. Step 3: Cross multiply
    18,883.90x = 28,329.90 × 5,737.60
  4. Step 4: Simplify right side
    18,883.90x = 162,545,634.24
  5. Step 5: Solve for x
    x = 162,545,634.24/18,883.90
  6. Step 6: Final answer
    x = 8,607.63

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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.