Home / 13,131.25-19,685.83-6,107.70

Finding the Fourth Proportional to 13,131.25, 19,685.83 and 6,107.70

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Solution

The fourth proportional to 13,131.25, 19,685.83 and 6,107.70 is: 9,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.25 : 19,685.83 = 6,107.70 : x
  2. Step 2: Convert to fraction form
    13,131.25/19,685.83 = 6,107.70/x
  3. Step 3: Cross multiply
    13,131.25x = 19,685.83 × 6,107.70
  4. Step 4: Simplify right side
    13,131.25x = 120,235,030.19
  5. Step 5: Solve for x
    x = 120,235,030.19/13,131.25
  6. Step 6: Final answer
    x = 9,156.40

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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.