Home / 13,766.87-18,979.98-10,943.75

Finding the Fourth Proportional to 13,766.87, 18,979.98 and 10,943.75

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Solution

The fourth proportional to 13,766.87, 18,979.98 and 10,943.75 is: 15,087.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,766.87 : 18,979.98 = 10,943.75 : x
  2. Step 2: Convert to fraction form
    13,766.87/18,979.98 = 10,943.75/x
  3. Step 3: Cross multiply
    13,766.87x = 18,979.98 × 10,943.75
  4. Step 4: Simplify right side
    13,766.87x = 207,712,156.13
  5. Step 5: Solve for x
    x = 207,712,156.13/13,766.87
  6. Step 6: Final answer
    x = 15,087.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.