Home / 13,649.44-18,837.32-7,680.73

Finding the Fourth Proportional to 13,649.44, 18,837.32 and 7,680.73

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Solution

The fourth proportional to 13,649.44, 18,837.32 and 7,680.73 is: 10,600.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.44 : 18,837.32 = 7,680.73 : x
  2. Step 2: Convert to fraction form
    13,649.44/18,837.32 = 7,680.73/x
  3. Step 3: Cross multiply
    13,649.44x = 18,837.32 × 7,680.73
  4. Step 4: Simplify right side
    13,649.44x = 144,684,368.84
  5. Step 5: Solve for x
    x = 144,684,368.84/13,649.44
  6. Step 6: Final answer
    x = 10,600.02

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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.