Home / 28,251.15-38,986.34-15,503.96

Finding the Fourth Proportional to 28,251.15, 38,986.34 and 15,503.96

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Solution

The fourth proportional to 28,251.15, 38,986.34 and 15,503.96 is: 21,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.15 : 38,986.34 = 15,503.96 : x
  2. Step 2: Convert to fraction form
    28,251.15/38,986.34 = 15,503.96/x
  3. Step 3: Cross multiply
    28,251.15x = 38,986.34 × 15,503.96
  4. Step 4: Simplify right side
    28,251.15x = 604,442,383.45
  5. Step 5: Solve for x
    x = 604,442,383.45/28,251.15
  6. Step 6: Final answer
    x = 21,395.32

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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.