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Finding the Fourth Proportional to 28,388.28, 42,582.42 and 10,863.48

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Solution

The fourth proportional to 28,388.28, 42,582.42 and 10,863.48 is: 16,295.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.28 : 42,582.42 = 10,863.48 : x
  2. Step 2: Convert to fraction form
    28,388.28/42,582.42 = 10,863.48/x
  3. Step 3: Cross multiply
    28,388.28x = 42,582.42 × 10,863.48
  4. Step 4: Simplify right side
    28,388.28x = 462,593,268.02
  5. Step 5: Solve for x
    x = 462,593,268.02/28,388.28
  6. Step 6: Final answer
    x = 16,295.22

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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.