Home / 13,291.30-19,933.35-6,721.30

Finding the Fourth Proportional to 13,291.30, 19,933.35 and 6,721.30

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Solution

The fourth proportional to 13,291.30, 19,933.35 and 6,721.30 is: 10,080.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.30 : 19,933.35 = 6,721.30 : x
  2. Step 2: Convert to fraction form
    13,291.30/19,933.35 = 6,721.30/x
  3. Step 3: Cross multiply
    13,291.30x = 19,933.35 × 6,721.30
  4. Step 4: Simplify right side
    13,291.30x = 133,978,025.36
  5. Step 5: Solve for x
    x = 133,978,025.36/13,291.30
  6. Step 6: Final answer
    x = 10,080.13

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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.