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Finding the Fourth Proportional to 14,425.82, 19,907.64 and 7,965.47

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Solution

The fourth proportional to 14,425.82, 19,907.64 and 7,965.47 is: 10,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,425.82 : 19,907.64 = 7,965.47 : x
  2. Step 2: Convert to fraction form
    14,425.82/19,907.64 = 7,965.47/x
  3. Step 3: Cross multiply
    14,425.82x = 19,907.64 × 7,965.47
  4. Step 4: Simplify right side
    14,425.82x = 158,573,609.65
  5. Step 5: Solve for x
    x = 158,573,609.65/14,425.82
  6. Step 6: Final answer
    x = 10,992.35

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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.