Home / 13,679.27-20,518.91-3,291.02

Finding the Fourth Proportional to 13,679.27, 20,518.91 and 3,291.02

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Solution

The fourth proportional to 13,679.27, 20,518.91 and 3,291.02 is: 4,936.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.27 : 20,518.91 = 3,291.02 : x
  2. Step 2: Convert to fraction form
    13,679.27/20,518.91 = 3,291.02/x
  3. Step 3: Cross multiply
    13,679.27x = 20,518.91 × 3,291.02
  4. Step 4: Simplify right side
    13,679.27x = 67,528,143.19
  5. Step 5: Solve for x
    x = 67,528,143.19/13,679.27
  6. Step 6: Final answer
    x = 4,936.53

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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.