Home / 27,774.36-38,329.38-15,839.64

Finding the Fourth Proportional to 27,774.36, 38,329.38 and 15,839.64

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Solution

The fourth proportional to 27,774.36, 38,329.38 and 15,839.64 is: 21,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,774.36 : 38,329.38 = 15,839.64 : x
  2. Step 2: Convert to fraction form
    27,774.36/38,329.38 = 15,839.64/x
  3. Step 3: Cross multiply
    27,774.36x = 38,329.38 × 15,839.64
  4. Step 4: Simplify right side
    27,774.36x = 607,123,580.62
  5. Step 5: Solve for x
    x = 607,123,580.62/27,774.36
  6. Step 6: Final answer
    x = 21,859.14

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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.