Home / 28,251.50-42,378.05-15,764.54

Finding the Fourth Proportional to 28,251.50, 42,378.05 and 15,764.54

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Solution

The fourth proportional to 28,251.50, 42,378.05 and 15,764.54 is: 23,647.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.50 : 42,378.05 = 15,764.54 : x
  2. Step 2: Convert to fraction form
    28,251.50/42,378.05 = 15,764.54/x
  3. Step 3: Cross multiply
    28,251.50x = 42,378.05 × 15,764.54
  4. Step 4: Simplify right side
    28,251.50x = 668,070,291.87
  5. Step 5: Solve for x
    x = 668,070,291.87/28,251.50
  6. Step 6: Final answer
    x = 23,647.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.