Home / 11,908.13-17,862.19-3,143.12

Finding the Fourth Proportional to 11,908.13, 17,862.19 and 3,143.12

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Solution

The fourth proportional to 11,908.13, 17,862.19 and 3,143.12 is: 4,714.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,908.13 : 17,862.19 = 3,143.12 : x
  2. Step 2: Convert to fraction form
    11,908.13/17,862.19 = 3,143.12/x
  3. Step 3: Cross multiply
    11,908.13x = 17,862.19 × 3,143.12
  4. Step 4: Simplify right side
    11,908.13x = 56,142,909.46
  5. Step 5: Solve for x
    x = 56,142,909.46/11,908.13
  6. Step 6: Final answer
    x = 4,714.67

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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.