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Finding the Fourth Proportional to 14,205.81, 19,604.13 and 7,918.59

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Solution

The fourth proportional to 14,205.81, 19,604.13 and 7,918.59 is: 10,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,205.81 : 19,604.13 = 7,918.59 : x
  2. Step 2: Convert to fraction form
    14,205.81/19,604.13 = 7,918.59/x
  3. Step 3: Cross multiply
    14,205.81x = 19,604.13 × 7,918.59
  4. Step 4: Simplify right side
    14,205.81x = 155,237,067.78
  5. Step 5: Solve for x
    x = 155,237,067.78/14,205.81
  6. Step 6: Final answer
    x = 10,927.72

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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.