Home / 13,387.14-18,476.84-7,721.73

Finding the Fourth Proportional to 13,387.14, 18,476.84 and 7,721.73

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Solution

The fourth proportional to 13,387.14, 18,476.84 and 7,721.73 is: 10,657.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.14 : 18,476.84 = 7,721.73 : x
  2. Step 2: Convert to fraction form
    13,387.14/18,476.84 = 7,721.73/x
  3. Step 3: Cross multiply
    13,387.14x = 18,476.84 × 7,721.73
  4. Step 4: Simplify right side
    13,387.14x = 142,673,189.04
  5. Step 5: Solve for x
    x = 142,673,189.04/13,387.14
  6. Step 6: Final answer
    x = 10,657.48

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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.