Home / 28,451.88-39,263.62-15,876.62

Finding the Fourth Proportional to 28,451.88, 39,263.62 and 15,876.62

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Solution

The fourth proportional to 28,451.88, 39,263.62 and 15,876.62 is: 21,909.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.88 : 39,263.62 = 15,876.62 : x
  2. Step 2: Convert to fraction form
    28,451.88/39,263.62 = 15,876.62/x
  3. Step 3: Cross multiply
    28,451.88x = 39,263.62 × 15,876.62
  4. Step 4: Simplify right side
    28,451.88x = 623,373,574.56
  5. Step 5: Solve for x
    x = 623,373,574.56/28,451.88
  6. Step 6: Final answer
    x = 21,909.75

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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.