Home / 28,061.68-42,087.94-11,421.04

Finding the Fourth Proportional to 28,061.68, 42,087.94 and 11,421.04

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Solution

The fourth proportional to 28,061.68, 42,087.94 and 11,421.04 is: 17,129.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.68 : 42,087.94 = 11,421.04 : x
  2. Step 2: Convert to fraction form
    28,061.68/42,087.94 = 11,421.04/x
  3. Step 3: Cross multiply
    28,061.68x = 42,087.94 × 11,421.04
  4. Step 4: Simplify right side
    28,061.68x = 480,687,912.49
  5. Step 5: Solve for x
    x = 480,687,912.49/28,061.68
  6. Step 6: Final answer
    x = 17,129.69

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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.