Home / 28,881.30-39,857.20-17,399.54

Finding the Fourth Proportional to 28,881.30, 39,857.20 and 17,399.54

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Solution

The fourth proportional to 28,881.30, 39,857.20 and 17,399.54 is: 24,011.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,881.30 : 39,857.20 = 17,399.54 : x
  2. Step 2: Convert to fraction form
    28,881.30/39,857.20 = 17,399.54/x
  3. Step 3: Cross multiply
    28,881.30x = 39,857.20 × 17,399.54
  4. Step 4: Simplify right side
    28,881.30x = 693,496,945.69
  5. Step 5: Solve for x
    x = 693,496,945.69/28,881.30
  6. Step 6: Final answer
    x = 24,011.97

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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.