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Finding the Fourth Proportional to 28,348.93, 42,523.80 and 9,880.93

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Solution

The fourth proportional to 28,348.93, 42,523.80 and 9,880.93 is: 14,821.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348.93 : 42,523.80 = 9,880.93 : x
  2. Step 2: Convert to fraction form
    28,348.93/42,523.80 = 9,880.93/x
  3. Step 3: Cross multiply
    28,348.93x = 42,523.80 × 9,880.93
  4. Step 4: Simplify right side
    28,348.93x = 420,174,691.13
  5. Step 5: Solve for x
    x = 420,174,691.13/28,348.93
  6. Step 6: Final answer
    x = 14,821.54

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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.