Home / 28,469.72-39,256.26-18,384.92

Finding the Fourth Proportional to 28,469.72, 39,256.26 and 18,384.92

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Solution

The fourth proportional to 28,469.72, 39,256.26 and 18,384.92 is: 25,350.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.72 : 39,256.26 = 18,384.92 : x
  2. Step 2: Convert to fraction form
    28,469.72/39,256.26 = 18,384.92/x
  3. Step 3: Cross multiply
    28,469.72x = 39,256.26 × 18,384.92
  4. Step 4: Simplify right side
    28,469.72x = 721,723,199.60
  5. Step 5: Solve for x
    x = 721,723,199.60/28,469.72
  6. Step 6: Final answer
    x = 25,350.55

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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.