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Finding the Fourth Proportional to 14,351.25, 19,804.96 and 7,891.16

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Solution

The fourth proportional to 14,351.25, 19,804.96 and 7,891.16 is: 10,889.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,351.25 : 19,804.96 = 7,891.16 : x
  2. Step 2: Convert to fraction form
    14,351.25/19,804.96 = 7,891.16/x
  3. Step 3: Cross multiply
    14,351.25x = 19,804.96 × 7,891.16
  4. Step 4: Simplify right side
    14,351.25x = 156,284,108.15
  5. Step 5: Solve for x
    x = 156,284,108.15/14,351.25
  6. Step 6: Final answer
    x = 10,889.93

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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.