Home / 13,931.82-19,226.84-7,965.36

Finding the Fourth Proportional to 13,931.82, 19,226.84 and 7,965.36

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Solution

The fourth proportional to 13,931.82, 19,226.84 and 7,965.36 is: 10,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.82 : 19,226.84 = 7,965.36 : x
  2. Step 2: Convert to fraction form
    13,931.82/19,226.84 = 7,965.36/x
  3. Step 3: Cross multiply
    13,931.82x = 19,226.84 × 7,965.36
  4. Step 4: Simplify right side
    13,931.82x = 153,148,662.44
  5. Step 5: Solve for x
    x = 153,148,662.44/13,931.82
  6. Step 6: Final answer
    x = 10,992.72

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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.