Home / 28,581.60-39,440.64-15,833.88

Finding the Fourth Proportional to 28,581.60, 39,440.64 and 15,833.88

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Solution

The fourth proportional to 28,581.60, 39,440.64 and 15,833.88 is: 21,849.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,581.60 : 39,440.64 = 15,833.88 : x
  2. Step 2: Convert to fraction form
    28,581.60/39,440.64 = 15,833.88/x
  3. Step 3: Cross multiply
    28,581.60x = 39,440.64 × 15,833.88
  4. Step 4: Simplify right side
    28,581.60x = 624,498,360.88
  5. Step 5: Solve for x
    x = 624,498,360.88/28,581.60
  6. Step 6: Final answer
    x = 21,849.66

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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.