Home / 10,438.29-15,657.30-3,418.56

Finding the Fourth Proportional to 10,438.29, 15,657.30 and 3,418.56

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Solution

The fourth proportional to 10,438.29, 15,657.30 and 3,418.56 is: 5,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,438.29 : 15,657.30 = 3,418.56 : x
  2. Step 2: Convert to fraction form
    10,438.29/15,657.30 = 3,418.56/x
  3. Step 3: Cross multiply
    10,438.29x = 15,657.30 × 3,418.56
  4. Step 4: Simplify right side
    10,438.29x = 53,525,419.49
  5. Step 5: Solve for x
    x = 53,525,419.49/10,438.29
  6. Step 6: Final answer
    x = 5,127.80

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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.