Home / 13,291.44-19,931.15-3,928.22

Finding the Fourth Proportional to 13,291.44, 19,931.15 and 3,928.22

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Solution

The fourth proportional to 13,291.44, 19,931.15 and 3,928.22 is: 5,890.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.44 : 19,931.15 = 3,928.22 : x
  2. Step 2: Convert to fraction form
    13,291.44/19,931.15 = 3,928.22/x
  3. Step 3: Cross multiply
    13,291.44x = 19,931.15 × 3,928.22
  4. Step 4: Simplify right side
    13,291.44x = 78,293,822.76
  5. Step 5: Solve for x
    x = 78,293,822.76/13,291.44
  6. Step 6: Final answer
    x = 5,890.54

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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.