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Finding the Fourth Proportional to 28,371.03, 42,562.94 and 8,651.58

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Solution

The fourth proportional to 28,371.03, 42,562.94 and 8,651.58 is: 12,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.03 : 42,562.94 = 8,651.58 : x
  2. Step 2: Convert to fraction form
    28,371.03/42,562.94 = 8,651.58/x
  3. Step 3: Cross multiply
    28,371.03x = 42,562.94 × 8,651.58
  4. Step 4: Simplify right side
    28,371.03x = 368,236,637.19
  5. Step 5: Solve for x
    x = 368,236,637.19/28,371.03
  6. Step 6: Final answer
    x = 12,979.32

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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.