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Finding the Fourth Proportional to 28,473.89, 42,714.92 and 8,754.11

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Solution

The fourth proportional to 28,473.89, 42,714.92 and 8,754.11 is: 13,132.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.89 : 42,714.92 = 8,754.11 : x
  2. Step 2: Convert to fraction form
    28,473.89/42,714.92 = 8,754.11/x
  3. Step 3: Cross multiply
    28,473.89x = 42,714.92 × 8,754.11
  4. Step 4: Simplify right side
    28,473.89x = 373,930,916.63
  5. Step 5: Solve for x
    x = 373,930,916.63/28,473.89
  6. Step 6: Final answer
    x = 13,132.41

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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.