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Finding the Fourth Proportional to 28,066.31, 42,106.44 and 8,344.84

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Solution

The fourth proportional to 28,066.31, 42,106.44 and 8,344.84 is: 12,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066.31 : 42,106.44 = 8,344.84 : x
  2. Step 2: Convert to fraction form
    28,066.31/42,106.44 = 8,344.84/x
  3. Step 3: Cross multiply
    28,066.31x = 42,106.44 × 8,344.84
  4. Step 4: Simplify right side
    28,066.31x = 351,371,294.24
  5. Step 5: Solve for x
    x = 351,371,294.24/28,066.31
  6. Step 6: Final answer
    x = 12,519.33

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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.