Home / 27,880.88-38,490.54-21,493.52

Finding the Fourth Proportional to 27,880.88, 38,490.54 and 21,493.52

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Solution

The fourth proportional to 27,880.88, 38,490.54 and 21,493.52 is: 29,672.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,880.88 : 38,490.54 = 21,493.52 : x
  2. Step 2: Convert to fraction form
    27,880.88/38,490.54 = 21,493.52/x
  3. Step 3: Cross multiply
    27,880.88x = 38,490.54 × 21,493.52
  4. Step 4: Simplify right side
    27,880.88x = 827,297,191.30
  5. Step 5: Solve for x
    x = 827,297,191.30/27,880.88
  6. Step 6: Final answer
    x = 29,672.56

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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.