Home / 14,142.25-19,516.31-7,855.21

Finding the Fourth Proportional to 14,142.25, 19,516.31 and 7,855.21

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Solution

The fourth proportional to 14,142.25, 19,516.31 and 7,855.21 is: 10,840.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.25 : 19,516.31 = 7,855.21 : x
  2. Step 2: Convert to fraction form
    14,142.25/19,516.31 = 7,855.21/x
  3. Step 3: Cross multiply
    14,142.25x = 19,516.31 × 7,855.21
  4. Step 4: Simplify right side
    14,142.25x = 153,304,713.48
  5. Step 5: Solve for x
    x = 153,304,713.48/14,142.25
  6. Step 6: Final answer
    x = 10,840.19

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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.