Home / 20,296.64-27,991.21-12,743.67

Finding the Fourth Proportional to 20,296.64, 27,991.21 and 12,743.67

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Solution

The fourth proportional to 20,296.64, 27,991.21 and 12,743.67 is: 17,574.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.64 : 27,991.21 = 12,743.67 : x
  2. Step 2: Convert to fraction form
    20,296.64/27,991.21 = 12,743.67/x
  3. Step 3: Cross multiply
    20,296.64x = 27,991.21 × 12,743.67
  4. Step 4: Simplify right side
    20,296.64x = 356,710,743.14
  5. Step 5: Solve for x
    x = 356,710,743.14/20,296.64
  6. Step 6: Final answer
    x = 17,574.87

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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.