Home / 27,646.25-38,121.66-18,678.17

Finding the Fourth Proportional to 27,646.25, 38,121.66 and 18,678.17

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Solution

The fourth proportional to 27,646.25, 38,121.66 and 18,678.17 is: 25,755.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,646.25 : 38,121.66 = 18,678.17 : x
  2. Step 2: Convert to fraction form
    27,646.25/38,121.66 = 18,678.17/x
  3. Step 3: Cross multiply
    27,646.25x = 38,121.66 × 18,678.17
  4. Step 4: Simplify right side
    27,646.25x = 712,042,655.55
  5. Step 5: Solve for x
    x = 712,042,655.55/27,646.25
  6. Step 6: Final answer
    x = 25,755.49

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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.