Home / 13,908.42-19,193.40-7,620.66

Finding the Fourth Proportional to 13,908.42, 19,193.40 and 7,620.66

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Solution

The fourth proportional to 13,908.42, 19,193.40 and 7,620.66 is: 10,516.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.42 : 19,193.40 = 7,620.66 : x
  2. Step 2: Convert to fraction form
    13,908.42/19,193.40 = 7,620.66/x
  3. Step 3: Cross multiply
    13,908.42x = 19,193.40 × 7,620.66
  4. Step 4: Simplify right side
    13,908.42x = 146,266,375.64
  5. Step 5: Solve for x
    x = 146,266,375.64/13,908.42
  6. Step 6: Final answer
    x = 10,516.39

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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.