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Finding the Fourth Proportional to 18,879.32, 28,333.02 and 15,225.32

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Solution

The fourth proportional to 18,879.32, 28,333.02 and 15,225.32 is: 22,849.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.32 : 28,333.02 = 15,225.32 : x
  2. Step 2: Convert to fraction form
    18,879.32/28,333.02 = 15,225.32/x
  3. Step 3: Cross multiply
    18,879.32x = 28,333.02 × 15,225.32
  4. Step 4: Simplify right side
    18,879.32x = 431,379,296.07
  5. Step 5: Solve for x
    x = 431,379,296.07/18,879.32
  6. Step 6: Final answer
    x = 22,849.30

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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.