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Finding the Fourth Proportional to 28,497.60, 42,748.83 and 7,440.44

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Solution

The fourth proportional to 28,497.60, 42,748.83 and 7,440.44 is: 11,161.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,497.60 : 42,748.83 = 7,440.44 : x
  2. Step 2: Convert to fraction form
    28,497.60/42,748.83 = 7,440.44/x
  3. Step 3: Cross multiply
    28,497.60x = 42,748.83 × 7,440.44
  4. Step 4: Simplify right side
    28,497.60x = 318,069,890.94
  5. Step 5: Solve for x
    x = 318,069,890.94/28,497.60
  6. Step 6: Final answer
    x = 11,161.29

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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.