Home / 13,679.30-18,877.56-7,710.44

Finding the Fourth Proportional to 13,679.30, 18,877.56 and 7,710.44

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Solution

The fourth proportional to 13,679.30, 18,877.56 and 7,710.44 is: 10,640.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.30 : 18,877.56 = 7,710.44 : x
  2. Step 2: Convert to fraction form
    13,679.30/18,877.56 = 7,710.44/x
  3. Step 3: Cross multiply
    13,679.30x = 18,877.56 × 7,710.44
  4. Step 4: Simplify right side
    13,679.30x = 145,554,293.73
  5. Step 5: Solve for x
    x = 145,554,293.73/13,679.30
  6. Step 6: Final answer
    x = 10,640.48

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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.