Home / 13,147.11-19,715.40-6,216.75

Finding the Fourth Proportional to 13,147.11, 19,715.40 and 6,216.75

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Solution

The fourth proportional to 13,147.11, 19,715.40 and 6,216.75 is: 9,322.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.11 : 19,715.40 = 6,216.75 : x
  2. Step 2: Convert to fraction form
    13,147.11/19,715.40 = 6,216.75/x
  3. Step 3: Cross multiply
    13,147.11x = 19,715.40 × 6,216.75
  4. Step 4: Simplify right side
    13,147.11x = 122,565,712.95
  5. Step 5: Solve for x
    x = 122,565,712.95/13,147.11
  6. Step 6: Final answer
    x = 9,322.64

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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.