Home / 20,972.20-28,935.78-13,014.76

Finding the Fourth Proportional to 20,972.20, 28,935.78 and 13,014.76

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Solution

The fourth proportional to 20,972.20, 28,935.78 and 13,014.76 is: 17,956.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.20 : 28,935.78 = 13,014.76 : x
  2. Step 2: Convert to fraction form
    20,972.20/28,935.78 = 13,014.76/x
  3. Step 3: Cross multiply
    20,972.20x = 28,935.78 × 13,014.76
  4. Step 4: Simplify right side
    20,972.20x = 376,592,232.11
  5. Step 5: Solve for x
    x = 376,592,232.11/20,972.20
  6. Step 6: Final answer
    x = 17,956.73

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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.