Home / 13,143.23-19,710.61-4,375.79

Finding the Fourth Proportional to 13,143.23, 19,710.61 and 4,375.79

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Solution

The fourth proportional to 13,143.23, 19,710.61 and 4,375.79 is: 6,562.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.23 : 19,710.61 = 4,375.79 : x
  2. Step 2: Convert to fraction form
    13,143.23/19,710.61 = 4,375.79/x
  3. Step 3: Cross multiply
    13,143.23x = 19,710.61 × 4,375.79
  4. Step 4: Simplify right side
    13,143.23x = 86,249,490.13
  5. Step 5: Solve for x
    x = 86,249,490.13/13,143.23
  6. Step 6: Final answer
    x = 6,562.28

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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.