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Finding the Fourth Proportional to 28,311.36, 42,473.04 and 9,590.48

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Solution

The fourth proportional to 28,311.36, 42,473.04 and 9,590.48 is: 14,387.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.36 : 42,473.04 = 9,590.48 : x
  2. Step 2: Convert to fraction form
    28,311.36/42,473.04 = 9,590.48/x
  3. Step 3: Cross multiply
    28,311.36x = 42,473.04 × 9,590.48
  4. Step 4: Simplify right side
    28,311.36x = 407,336,840.66
  5. Step 5: Solve for x
    x = 407,336,840.66/28,311.36
  6. Step 6: Final answer
    x = 14,387.75

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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.