Home / 13,575.36-18,724.86-7,986.36

Finding the Fourth Proportional to 13,575.36, 18,724.86 and 7,986.36

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Solution

The fourth proportional to 13,575.36, 18,724.86 and 7,986.36 is: 11,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.36 : 18,724.86 = 7,986.36 : x
  2. Step 2: Convert to fraction form
    13,575.36/18,724.86 = 7,986.36/x
  3. Step 3: Cross multiply
    13,575.36x = 18,724.86 × 7,986.36
  4. Step 4: Simplify right side
    13,575.36x = 149,543,472.91
  5. Step 5: Solve for x
    x = 149,543,472.91/13,575.36
  6. Step 6: Final answer
    x = 11,015.80

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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.