Home / 10,345.88-15,521.24-3,420.38

Finding the Fourth Proportional to 10,345.88, 15,521.24 and 3,420.38

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Solution

The fourth proportional to 10,345.88, 15,521.24 and 3,420.38 is: 5,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.88 : 15,521.24 = 3,420.38 : x
  2. Step 2: Convert to fraction form
    10,345.88/15,521.24 = 3,420.38/x
  3. Step 3: Cross multiply
    10,345.88x = 15,521.24 × 3,420.38
  4. Step 4: Simplify right side
    10,345.88x = 53,088,538.87
  5. Step 5: Solve for x
    x = 53,088,538.87/10,345.88
  6. Step 6: Final answer
    x = 5,131.37

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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.