Home / 20,321.70-30,461.76-13,748.58

Finding the Fourth Proportional to 20,321.70, 30,461.76 and 13,748.58

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Solution

The fourth proportional to 20,321.70, 30,461.76 and 13,748.58 is: 20,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.70 : 30,461.76 = 13,748.58 : x
  2. Step 2: Convert to fraction form
    20,321.70/30,461.76 = 13,748.58/x
  3. Step 3: Cross multiply
    20,321.70x = 30,461.76 × 13,748.58
  4. Step 4: Simplify right side
    20,321.70x = 418,805,944.30
  5. Step 5: Solve for x
    x = 418,805,944.30/20,321.70
  6. Step 6: Final answer
    x = 20,608.80

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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.