Home / 27,768.20-38,320.64-15,193.76

Finding the Fourth Proportional to 27,768.20, 38,320.64 and 15,193.76

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Solution

The fourth proportional to 27,768.20, 38,320.64 and 15,193.76 is: 20,967.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,768.20 : 38,320.64 = 15,193.76 : x
  2. Step 2: Convert to fraction form
    27,768.20/38,320.64 = 15,193.76/x
  3. Step 3: Cross multiply
    27,768.20x = 38,320.64 × 15,193.76
  4. Step 4: Simplify right side
    27,768.20x = 582,234,607.21
  5. Step 5: Solve for x
    x = 582,234,607.21/27,768.20
  6. Step 6: Final answer
    x = 20,967.68

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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.