Home / 13,215.08-18,236.94-7,625

Finding the Fourth Proportional to 13,215.08, 18,236.94 and 7,625

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Solution

The fourth proportional to 13,215.08, 18,236.94 and 7,625 is: 10,522.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.08 : 18,236.94 = 7,625 : x
  2. Step 2: Convert to fraction form
    13,215.08/18,236.94 = 7,625/x
  3. Step 3: Cross multiply
    13,215.08x = 18,236.94 × 7,625
  4. Step 4: Simplify right side
    13,215.08x = 139,056,667.50
  5. Step 5: Solve for x
    x = 139,056,667.50/13,215.08
  6. Step 6: Final answer
    x = 10,522.57

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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.