Home / 15,493.08-21,397.86-11,998.56

Finding the Fourth Proportional to 15,493.08, 21,397.86 and 11,998.56

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Solution

The fourth proportional to 15,493.08, 21,397.86 and 11,998.56 is: 16,571.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.08 : 21,397.86 = 11,998.56 : x
  2. Step 2: Convert to fraction form
    15,493.08/21,397.86 = 11,998.56/x
  3. Step 3: Cross multiply
    15,493.08x = 21,397.86 × 11,998.56
  4. Step 4: Simplify right side
    15,493.08x = 256,743,507.08
  5. Step 5: Solve for x
    x = 256,743,507.08/15,493.08
  6. Step 6: Final answer
    x = 16,571.50

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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.