Home / 13,998.30-21,007.05-6,212.70

Finding the Fourth Proportional to 13,998.30, 21,007.05 and 6,212.70

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Solution

The fourth proportional to 13,998.30, 21,007.05 and 6,212.70 is: 9,323.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.30 : 21,007.05 = 6,212.70 : x
  2. Step 2: Convert to fraction form
    13,998.30/21,007.05 = 6,212.70/x
  3. Step 3: Cross multiply
    13,998.30x = 21,007.05 × 6,212.70
  4. Step 4: Simplify right side
    13,998.30x = 130,510,499.54
  5. Step 5: Solve for x
    x = 130,510,499.54/13,998.30
  6. Step 6: Final answer
    x = 9,323.31

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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.