Home / 13,278.02-18,321.52-7,611.73

Finding the Fourth Proportional to 13,278.02, 18,321.52 and 7,611.73

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Solution

The fourth proportional to 13,278.02, 18,321.52 and 7,611.73 is: 10,502.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.02 : 18,321.52 = 7,611.73 : x
  2. Step 2: Convert to fraction form
    13,278.02/18,321.52 = 7,611.73/x
  3. Step 3: Cross multiply
    13,278.02x = 18,321.52 × 7,611.73
  4. Step 4: Simplify right side
    13,278.02x = 139,458,463.43
  5. Step 5: Solve for x
    x = 139,458,463.43/13,278.02
  6. Step 6: Final answer
    x = 10,502.96

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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.