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Finding the Fourth Proportional to 14,369.78, 19,830.48 and 7,995.80

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Solution

The fourth proportional to 14,369.78, 19,830.48 and 7,995.80 is: 11,034.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,369.78 : 19,830.48 = 7,995.80 : x
  2. Step 2: Convert to fraction form
    14,369.78/19,830.48 = 7,995.80/x
  3. Step 3: Cross multiply
    14,369.78x = 19,830.48 × 7,995.80
  4. Step 4: Simplify right side
    14,369.78x = 158,560,551.98
  5. Step 5: Solve for x
    x = 158,560,551.98/14,369.78
  6. Step 6: Final answer
    x = 11,034.31

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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.