Home / 13,997.39-19,320.36-9,220.82

Finding the Fourth Proportional to 13,997.39, 19,320.36 and 9,220.82

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Solution

The fourth proportional to 13,997.39, 19,320.36 and 9,220.82 is: 12,727.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.39 : 19,320.36 = 9,220.82 : x
  2. Step 2: Convert to fraction form
    13,997.39/19,320.36 = 9,220.82/x
  3. Step 3: Cross multiply
    13,997.39x = 19,320.36 × 9,220.82
  4. Step 4: Simplify right side
    13,997.39x = 178,149,561.90
  5. Step 5: Solve for x
    x = 178,149,561.90/13,997.39
  6. Step 6: Final answer
    x = 12,727.34

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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.