Home / 13,143.13-19,714.70-3,909.13

Finding the Fourth Proportional to 13,143.13, 19,714.70 and 3,909.13

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Solution

The fourth proportional to 13,143.13, 19,714.70 and 3,909.13 is: 5,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.13 : 19,714.70 = 3,909.13 : x
  2. Step 2: Convert to fraction form
    13,143.13/19,714.70 = 3,909.13/x
  3. Step 3: Cross multiply
    13,143.13x = 19,714.70 × 3,909.13
  4. Step 4: Simplify right side
    13,143.13x = 77,067,325.21
  5. Step 5: Solve for x
    x = 77,067,325.21/13,143.13
  6. Step 6: Final answer
    x = 5,863.70

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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.