Home / 13,291.93-19,937.89-3,931.22

Finding the Fourth Proportional to 13,291.93, 19,937.89 and 3,931.22

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Solution

The fourth proportional to 13,291.93, 19,937.89 and 3,931.22 is: 5,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.93 : 19,937.89 = 3,931.22 : x
  2. Step 2: Convert to fraction form
    13,291.93/19,937.89 = 3,931.22/x
  3. Step 3: Cross multiply
    13,291.93x = 19,937.89 × 3,931.22
  4. Step 4: Simplify right side
    13,291.93x = 78,380,241.67
  5. Step 5: Solve for x
    x = 78,380,241.67/13,291.93
  6. Step 6: Final answer
    x = 5,896.83

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1.5x scale

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.