Home / 28,433.72-39,239.89-15,856.04

Finding the Fourth Proportional to 28,433.72, 39,239.89 and 15,856.04

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Solution

The fourth proportional to 28,433.72, 39,239.89 and 15,856.04 is: 21,882.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.72 : 39,239.89 = 15,856.04 : x
  2. Step 2: Convert to fraction form
    28,433.72/39,239.89 = 15,856.04/x
  3. Step 3: Cross multiply
    28,433.72x = 39,239.89 × 15,856.04
  4. Step 4: Simplify right side
    28,433.72x = 622,189,265.44
  5. Step 5: Solve for x
    x = 622,189,265.44/28,433.72
  6. Step 6: Final answer
    x = 21,882.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.