Home / 13,679.44-18,877.16-7,710.96

Finding the Fourth Proportional to 13,679.44, 18,877.16 and 7,710.96

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Solution

The fourth proportional to 13,679.44, 18,877.16 and 7,710.96 is: 10,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.44 : 18,877.16 = 7,710.96 : x
  2. Step 2: Convert to fraction form
    13,679.44/18,877.16 = 7,710.96/x
  3. Step 3: Cross multiply
    13,679.44x = 18,877.16 × 7,710.96
  4. Step 4: Simplify right side
    13,679.44x = 145,561,025.67
  5. Step 5: Solve for x
    x = 145,561,025.67/13,679.44
  6. Step 6: Final answer
    x = 10,640.86

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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.