Home / 20,974.34-31,472.45-8,503.58

Finding the Fourth Proportional to 20,974.34, 31,472.45 and 8,503.58

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Solution

The fourth proportional to 20,974.34, 31,472.45 and 8,503.58 is: 12,759.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.34 : 31,472.45 = 8,503.58 : x
  2. Step 2: Convert to fraction form
    20,974.34/31,472.45 = 8,503.58/x
  3. Step 3: Cross multiply
    20,974.34x = 31,472.45 × 8,503.58
  4. Step 4: Simplify right side
    20,974.34x = 267,628,296.49
  5. Step 5: Solve for x
    x = 267,628,296.49/20,974.34
  6. Step 6: Final answer
    x = 12,759.80

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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.