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Finding the Fourth Proportional to 28,636.94, 42,976.22 and 21,625.62

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Solution

The fourth proportional to 28,636.94, 42,976.22 and 21,625.62 is: 32,454.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.94 : 42,976.22 = 21,625.62 : x
  2. Step 2: Convert to fraction form
    28,636.94/42,976.22 = 21,625.62/x
  3. Step 3: Cross multiply
    28,636.94x = 42,976.22 × 21,625.62
  4. Step 4: Simplify right side
    28,636.94x = 929,387,402.76
  5. Step 5: Solve for x
    x = 929,387,402.76/28,636.94
  6. Step 6: Final answer
    x = 32,454.14

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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.