Home / 28,299.11-39,052.78-15,723.86

Finding the Fourth Proportional to 28,299.11, 39,052.78 and 15,723.86

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Solution

The fourth proportional to 28,299.11, 39,052.78 and 15,723.86 is: 21,698.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.11 : 39,052.78 = 15,723.86 : x
  2. Step 2: Convert to fraction form
    28,299.11/39,052.78 = 15,723.86/x
  3. Step 3: Cross multiply
    28,299.11x = 39,052.78 × 15,723.86
  4. Step 4: Simplify right side
    28,299.11x = 614,060,445.33
  5. Step 5: Solve for x
    x = 614,060,445.33/28,299.11
  6. Step 6: Final answer
    x = 21,698.93

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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.