Home / 20,187.36-30,296.72-13,990.76

Finding the Fourth Proportional to 20,187.36, 30,296.72 and 13,990.76

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Solution

The fourth proportional to 20,187.36, 30,296.72 and 13,990.76 is: 20,997.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.36 : 30,296.72 = 13,990.76 : x
  2. Step 2: Convert to fraction form
    20,187.36/30,296.72 = 13,990.76/x
  3. Step 3: Cross multiply
    20,187.36x = 30,296.72 × 13,990.76
  4. Step 4: Simplify right side
    20,187.36x = 423,874,138.31
  5. Step 5: Solve for x
    x = 423,874,138.31/20,187.36
  6. Step 6: Final answer
    x = 20,997.01

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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.