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Finding the Fourth Proportional to 28,028.21, 42,035.15 and 8,302.16

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Solution

The fourth proportional to 28,028.21, 42,035.15 and 8,302.16 is: 12,451.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.21 : 42,035.15 = 8,302.16 : x
  2. Step 2: Convert to fraction form
    28,028.21/42,035.15 = 8,302.16/x
  3. Step 3: Cross multiply
    28,028.21x = 42,035.15 × 8,302.16
  4. Step 4: Simplify right side
    28,028.21x = 348,982,330.75
  5. Step 5: Solve for x
    x = 348,982,330.75/28,028.21
  6. Step 6: Final answer
    x = 12,451.11

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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.