Home / 10,201.85-15,303.51-4,272.78

Finding the Fourth Proportional to 10,201.85, 15,303.51 and 4,272.78

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Solution

The fourth proportional to 10,201.85, 15,303.51 and 4,272.78 is: 6,409.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,201.85 : 15,303.51 = 4,272.78 : x
  2. Step 2: Convert to fraction form
    10,201.85/15,303.51 = 4,272.78/x
  3. Step 3: Cross multiply
    10,201.85x = 15,303.51 × 4,272.78
  4. Step 4: Simplify right side
    10,201.85x = 65,388,531.46
  5. Step 5: Solve for x
    x = 65,388,531.46/10,201.85
  6. Step 6: Final answer
    x = 6,409.48

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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.