Home / 13,936.56-19,231.20-7,648.80

Finding the Fourth Proportional to 13,936.56, 19,231.20 and 7,648.80

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Solution

The fourth proportional to 13,936.56, 19,231.20 and 7,648.80 is: 10,554.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936.56 : 19,231.20 = 7,648.80 : x
  2. Step 2: Convert to fraction form
    13,936.56/19,231.20 = 7,648.80/x
  3. Step 3: Cross multiply
    13,936.56x = 19,231.20 × 7,648.80
  4. Step 4: Simplify right side
    13,936.56x = 147,095,602.56
  5. Step 5: Solve for x
    x = 147,095,602.56/13,936.56
  6. Step 6: Final answer
    x = 10,554.66

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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.