Home / 27,913.88-38,521.14-15,338.62

Finding the Fourth Proportional to 27,913.88, 38,521.14 and 15,338.62

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Solution

The fourth proportional to 27,913.88, 38,521.14 and 15,338.62 is: 21,167.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,913.88 : 38,521.14 = 15,338.62 : x
  2. Step 2: Convert to fraction form
    27,913.88/38,521.14 = 15,338.62/x
  3. Step 3: Cross multiply
    27,913.88x = 38,521.14 × 15,338.62
  4. Step 4: Simplify right side
    27,913.88x = 590,861,128.43
  5. Step 5: Solve for x
    x = 590,861,128.43/27,913.88
  6. Step 6: Final answer
    x = 21,167.29

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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.