Home / 13,139.70-19,710.81-4,375.23

Finding the Fourth Proportional to 13,139.70, 19,710.81 and 4,375.23

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Solution

The fourth proportional to 13,139.70, 19,710.81 and 4,375.23 is: 6,563.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.70 : 19,710.81 = 4,375.23 : x
  2. Step 2: Convert to fraction form
    13,139.70/19,710.81 = 4,375.23/x
  3. Step 3: Cross multiply
    13,139.70x = 19,710.81 × 4,375.23
  4. Step 4: Simplify right side
    13,139.70x = 86,239,327.24
  5. Step 5: Solve for x
    x = 86,239,327.24/13,139.70
  6. Step 6: Final answer
    x = 6,563.26

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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.