Home / 20,090.62-30,132.49-5,299.69

Finding the Fourth Proportional to 20,090.62, 30,132.49 and 5,299.69

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Solution

The fourth proportional to 20,090.62, 30,132.49 and 5,299.69 is: 7,948.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.62 : 30,132.49 = 5,299.69 : x
  2. Step 2: Convert to fraction form
    20,090.62/30,132.49 = 5,299.69/x
  3. Step 3: Cross multiply
    20,090.62x = 30,132.49 × 5,299.69
  4. Step 4: Simplify right side
    20,090.62x = 159,692,678.77
  5. Step 5: Solve for x
    x = 159,692,678.77/20,090.62
  6. Step 6: Final answer
    x = 7,948.62

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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.