Home / 13,688.97-18,892.76-12,844.65

Finding the Fourth Proportional to 13,688.97, 18,892.76 and 12,844.65

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Solution

The fourth proportional to 13,688.97, 18,892.76 and 12,844.65 is: 17,727.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.97 : 18,892.76 = 12,844.65 : x
  2. Step 2: Convert to fraction form
    13,688.97/18,892.76 = 12,844.65/x
  3. Step 3: Cross multiply
    13,688.97x = 18,892.76 × 12,844.65
  4. Step 4: Simplify right side
    13,688.97x = 242,670,754.66
  5. Step 5: Solve for x
    x = 242,670,754.66/13,688.97
  6. Step 6: Final answer
    x = 17,727.47

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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.