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Finding the Fourth Proportional to 28,028.71, 42,035.90 and 8,302.65

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Solution

The fourth proportional to 28,028.71, 42,035.90 and 8,302.65 is: 12,451.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.71 : 42,035.90 = 8,302.65 : x
  2. Step 2: Convert to fraction form
    28,028.71/42,035.90 = 8,302.65/x
  3. Step 3: Cross multiply
    28,028.71x = 42,035.90 × 8,302.65
  4. Step 4: Simplify right side
    28,028.71x = 349,009,365.14
  5. Step 5: Solve for x
    x = 349,009,365.14/28,028.71
  6. Step 6: Final answer
    x = 12,451.85

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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.