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Finding the Fourth Proportional to 28,414.54, 42,620.26 and 8,693.10

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Solution

The fourth proportional to 28,414.54, 42,620.26 and 8,693.10 is: 13,039.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414.54 : 42,620.26 = 8,693.10 : x
  2. Step 2: Convert to fraction form
    28,414.54/42,620.26 = 8,693.10/x
  3. Step 3: Cross multiply
    28,414.54x = 42,620.26 × 8,693.10
  4. Step 4: Simplify right side
    28,414.54x = 370,502,097.39
  5. Step 5: Solve for x
    x = 370,502,097.39/28,414.54
  6. Step 6: Final answer
    x = 13,039.17

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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.