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Finding the Fourth Proportional to 28,347.93, 42,522.30 and 9,879.93

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Solution

The fourth proportional to 28,347.93, 42,522.30 and 9,879.93 is: 14,820.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347.93 : 42,522.30 = 9,879.93 : x
  2. Step 2: Convert to fraction form
    28,347.93/42,522.30 = 9,879.93/x
  3. Step 3: Cross multiply
    28,347.93x = 42,522.30 × 9,879.93
  4. Step 4: Simplify right side
    28,347.93x = 420,117,347.44
  5. Step 5: Solve for x
    x = 420,117,347.44/28,347.93
  6. Step 6: Final answer
    x = 14,820.04

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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.