Home / 20,296.59-27,991.16-12,743.62

Finding the Fourth Proportional to 20,296.59, 27,991.16 and 12,743.62

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Solution

The fourth proportional to 20,296.59, 27,991.16 and 12,743.62 is: 17,574.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.59 : 27,991.16 = 12,743.62 : x
  2. Step 2: Convert to fraction form
    20,296.59/27,991.16 = 12,743.62/x
  3. Step 3: Cross multiply
    20,296.59x = 27,991.16 × 12,743.62
  4. Step 4: Simplify right side
    20,296.59x = 356,708,706.40
  5. Step 5: Solve for x
    x = 356,708,706.40/20,296.59
  6. Step 6: Final answer
    x = 17,574.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.