Home / 21,743.56-30,006-11,807.56

Finding the Fourth Proportional to 21,743.56, 30,006 and 11,807.56

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Solution

The fourth proportional to 21,743.56, 30,006 and 11,807.56 is: 16,294.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,743.56 : 30,006 = 11,807.56 : x
  2. Step 2: Convert to fraction form
    21,743.56/30,006 = 11,807.56/x
  3. Step 3: Cross multiply
    21,743.56x = 30,006 × 11,807.56
  4. Step 4: Simplify right side
    21,743.56x = 354,297,645.36
  5. Step 5: Solve for x
    x = 354,297,645.36/21,743.56
  6. Step 6: Final answer
    x = 16,294.37

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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.