Home / 10,218.52-15,314.58-4,288.72

Finding the Fourth Proportional to 10,218.52, 15,314.58 and 4,288.72

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Solution

The fourth proportional to 10,218.52, 15,314.58 and 4,288.72 is: 6,427.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.52 : 15,314.58 = 4,288.72 : x
  2. Step 2: Convert to fraction form
    10,218.52/15,314.58 = 4,288.72/x
  3. Step 3: Cross multiply
    10,218.52x = 15,314.58 × 4,288.72
  4. Step 4: Simplify right side
    10,218.52x = 65,679,945.54
  5. Step 5: Solve for x
    x = 65,679,945.54/10,218.52
  6. Step 6: Final answer
    x = 6,427.54

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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.