Home / 13,143.15-19,694.54-8,920.92

Finding the Fourth Proportional to 13,143.15, 19,694.54 and 8,920.92

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Solution

The fourth proportional to 13,143.15, 19,694.54 and 8,920.92 is: 13,367.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.15 : 19,694.54 = 8,920.92 : x
  2. Step 2: Convert to fraction form
    13,143.15/19,694.54 = 8,920.92/x
  3. Step 3: Cross multiply
    13,143.15x = 19,694.54 × 8,920.92
  4. Step 4: Simplify right side
    13,143.15x = 175,693,415.78
  5. Step 5: Solve for x
    x = 175,693,415.78/13,143.15
  6. Step 6: Final answer
    x = 13,367.68

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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.