Home / 13,236.43-18,266.70-7,647.43

Finding the Fourth Proportional to 13,236.43, 18,266.70 and 7,647.43

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Solution

The fourth proportional to 13,236.43, 18,266.70 and 7,647.43 is: 10,553.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.43 : 18,266.70 = 7,647.43 : x
  2. Step 2: Convert to fraction form
    13,236.43/18,266.70 = 7,647.43/x
  3. Step 3: Cross multiply
    13,236.43x = 18,266.70 × 7,647.43
  4. Step 4: Simplify right side
    13,236.43x = 139,693,309.58
  5. Step 5: Solve for x
    x = 139,693,309.58/13,236.43
  6. Step 6: Final answer
    x = 10,553.70

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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.