Home / 26,729.20-36,890.20-15,396.49

Finding the Fourth Proportional to 26,729.20, 36,890.20 and 15,396.49

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Solution

The fourth proportional to 26,729.20, 36,890.20 and 15,396.49 is: 21,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,729.20 : 36,890.20 = 15,396.49 : x
  2. Step 2: Convert to fraction form
    26,729.20/36,890.20 = 15,396.49/x
  3. Step 3: Cross multiply
    26,729.20x = 36,890.20 × 15,396.49
  4. Step 4: Simplify right side
    26,729.20x = 567,979,595.40
  5. Step 5: Solve for x
    x = 567,979,595.40/26,729.20
  6. Step 6: Final answer
    x = 21,249.40

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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.