Home / 13,911.92-20,874.68-6,119.76

Finding the Fourth Proportional to 13,911.92, 20,874.68 and 6,119.76

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Solution

The fourth proportional to 13,911.92, 20,874.68 and 6,119.76 is: 9,182.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.92 : 20,874.68 = 6,119.76 : x
  2. Step 2: Convert to fraction form
    13,911.92/20,874.68 = 6,119.76/x
  3. Step 3: Cross multiply
    13,911.92x = 20,874.68 × 6,119.76
  4. Step 4: Simplify right side
    13,911.92x = 127,748,031.68
  5. Step 5: Solve for x
    x = 127,748,031.68/13,911.92
  6. Step 6: Final answer
    x = 9,182.63

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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.