Home / 13,238.56-18,267.92-7,649.44

Finding the Fourth Proportional to 13,238.56, 18,267.92 and 7,649.44

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Solution

The fourth proportional to 13,238.56, 18,267.92 and 7,649.44 is: 10,555.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.56 : 18,267.92 = 7,649.44 : x
  2. Step 2: Convert to fraction form
    13,238.56/18,267.92 = 7,649.44/x
  3. Step 3: Cross multiply
    13,238.56x = 18,267.92 × 7,649.44
  4. Step 4: Simplify right side
    13,238.56x = 139,739,357.96
  5. Step 5: Solve for x
    x = 139,739,357.96/13,238.56
  6. Step 6: Final answer
    x = 10,555.48

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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.