Home / 13,965.75-19,272.74-7,678.13

Finding the Fourth Proportional to 13,965.75, 19,272.74 and 7,678.13

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Solution

The fourth proportional to 13,965.75, 19,272.74 and 7,678.13 is: 10,595.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.75 : 19,272.74 = 7,678.13 : x
  2. Step 2: Convert to fraction form
    13,965.75/19,272.74 = 7,678.13/x
  3. Step 3: Cross multiply
    13,965.75x = 19,272.74 × 7,678.13
  4. Step 4: Simplify right side
    13,965.75x = 147,978,468.42
  5. Step 5: Solve for x
    x = 147,978,468.42/13,965.75
  6. Step 6: Final answer
    x = 10,595.81

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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.