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Finding the Fourth Proportional to 28,375.97, 42,590.21 and 14,345.89

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Solution

The fourth proportional to 28,375.97, 42,590.21 and 14,345.89 is: 21,532.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.97 : 42,590.21 = 14,345.89 : x
  2. Step 2: Convert to fraction form
    28,375.97/42,590.21 = 14,345.89/x
  3. Step 3: Cross multiply
    28,375.97x = 42,590.21 × 14,345.89
  4. Step 4: Simplify right side
    28,375.97x = 610,994,289.53
  5. Step 5: Solve for x
    x = 610,994,289.53/28,375.97
  6. Step 6: Final answer
    x = 21,532.11

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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.