Home / 10,207.76-15,309.80-2,811.26

Finding the Fourth Proportional to 10,207.76, 15,309.80 and 2,811.26

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Solution

The fourth proportional to 10,207.76, 15,309.80 and 2,811.26 is: 4,216.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,207.76 : 15,309.80 = 2,811.26 : x
  2. Step 2: Convert to fraction form
    10,207.76/15,309.80 = 2,811.26/x
  3. Step 3: Cross multiply
    10,207.76x = 15,309.80 × 2,811.26
  4. Step 4: Simplify right side
    10,207.76x = 43,039,828.35
  5. Step 5: Solve for x
    x = 43,039,828.35/10,207.76
  6. Step 6: Final answer
    x = 4,216.38

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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.