Home / 20,283.48-30,421.32-6,239.76

Finding the Fourth Proportional to 20,283.48, 30,421.32 and 6,239.76

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Solution

The fourth proportional to 20,283.48, 30,421.32 and 6,239.76 is: 9,358.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.48 : 30,421.32 = 6,239.76 : x
  2. Step 2: Convert to fraction form
    20,283.48/30,421.32 = 6,239.76/x
  3. Step 3: Cross multiply
    20,283.48x = 30,421.32 × 6,239.76
  4. Step 4: Simplify right side
    20,283.48x = 189,821,735.68
  5. Step 5: Solve for x
    x = 189,821,735.68/20,283.48
  6. Step 6: Final answer
    x = 9,358.44

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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.