Home / 12,997.17-19,495.74-5,211.45

Finding the Fourth Proportional to 12,997.17, 19,495.74 and 5,211.45

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Solution

The fourth proportional to 12,997.17, 19,495.74 and 5,211.45 is: 7,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997.17 : 19,495.74 = 5,211.45 : x
  2. Step 2: Convert to fraction form
    12,997.17/19,495.74 = 5,211.45/x
  3. Step 3: Cross multiply
    12,997.17x = 19,495.74 × 5,211.45
  4. Step 4: Simplify right side
    12,997.17x = 101,601,074.22
  5. Step 5: Solve for x
    x = 101,601,074.22/12,997.17
  6. Step 6: Final answer
    x = 7,817.17

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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.