Home / 20,996.94-31,495.45-19,713.90

Finding the Fourth Proportional to 20,996.94, 31,495.45 and 19,713.90

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Solution

The fourth proportional to 20,996.94, 31,495.45 and 19,713.90 is: 29,570.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.94 : 31,495.45 = 19,713.90 : x
  2. Step 2: Convert to fraction form
    20,996.94/31,495.45 = 19,713.90/x
  3. Step 3: Cross multiply
    20,996.94x = 31,495.45 × 19,713.90
  4. Step 4: Simplify right side
    20,996.94x = 620,898,151.76
  5. Step 5: Solve for x
    x = 620,898,151.76/20,996.94
  6. Step 6: Final answer
    x = 29,570.89

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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.