Home / 20,996.90-31,499.79-6,956.13

Finding the Fourth Proportional to 20,996.90, 31,499.79 and 6,956.13

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Solution

The fourth proportional to 20,996.90, 31,499.79 and 6,956.13 is: 10,435.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.90 : 31,499.79 = 6,956.13 : x
  2. Step 2: Convert to fraction form
    20,996.90/31,499.79 = 6,956.13/x
  3. Step 3: Cross multiply
    20,996.90x = 31,499.79 × 6,956.13
  4. Step 4: Simplify right side
    20,996.90x = 219,116,549.07
  5. Step 5: Solve for x
    x = 219,116,549.07/20,996.90
  6. Step 6: Final answer
    x = 10,435.66

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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.