Home / 20,997.40-31,500.54-6,956.63

Finding the Fourth Proportional to 20,997.40, 31,500.54 and 6,956.63

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Solution

The fourth proportional to 20,997.40, 31,500.54 and 6,956.63 is: 10,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.40 : 31,500.54 = 6,956.63 : x
  2. Step 2: Convert to fraction form
    20,997.40/31,500.54 = 6,956.63/x
  3. Step 3: Cross multiply
    20,997.40x = 31,500.54 × 6,956.63
  4. Step 4: Simplify right side
    20,997.40x = 219,137,566.80
  5. Step 5: Solve for x
    x = 219,137,566.80/20,997.40
  6. Step 6: Final answer
    x = 10,436.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.