Home / 17,119.56-25,681.50-5,428.60

Finding the Fourth Proportional to 17,119.56, 25,681.50 and 5,428.60

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Solution

The fourth proportional to 17,119.56, 25,681.50 and 5,428.60 is: 8,143.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,119.56 : 25,681.50 = 5,428.60 : x
  2. Step 2: Convert to fraction form
    17,119.56/25,681.50 = 5,428.60/x
  3. Step 3: Cross multiply
    17,119.56x = 25,681.50 × 5,428.60
  4. Step 4: Simplify right side
    17,119.56x = 139,414,590.90
  5. Step 5: Solve for x
    x = 139,414,590.90/17,119.56
  6. Step 6: Final answer
    x = 8,143.58

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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.