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Finding the Fourth Proportional to 28,569.02, 42,843.48 and 8,572.54

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Solution

The fourth proportional to 28,569.02, 42,843.48 and 8,572.54 is: 12,855.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.02 : 42,843.48 = 8,572.54 : x
  2. Step 2: Convert to fraction form
    28,569.02/42,843.48 = 8,572.54/x
  3. Step 3: Cross multiply
    28,569.02x = 42,843.48 × 8,572.54
  4. Step 4: Simplify right side
    28,569.02x = 367,277,446.04
  5. Step 5: Solve for x
    x = 367,277,446.04/28,569.02
  6. Step 6: Final answer
    x = 12,855.79

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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.