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Finding the Fourth Proportional to 27,793.40, 38,352.18 and 15,859.40

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Solution

The fourth proportional to 27,793.40, 38,352.18 and 15,859.40 is: 21,884.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,793.40 : 38,352.18 = 15,859.40 : x
  2. Step 2: Convert to fraction form
    27,793.40/38,352.18 = 15,859.40/x
  3. Step 3: Cross multiply
    27,793.40x = 38,352.18 × 15,859.40
  4. Step 4: Simplify right side
    27,793.40x = 608,242,563.49
  5. Step 5: Solve for x
    x = 608,242,563.49/27,793.40
  6. Step 6: Final answer
    x = 21,884.42

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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.