Home / 12,678.27-17,496.45-7,374.80

Finding the Fourth Proportional to 12,678.27, 17,496.45 and 7,374.80

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Solution

The fourth proportional to 12,678.27, 17,496.45 and 7,374.80 is: 10,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.27 : 17,496.45 = 7,374.80 : x
  2. Step 2: Convert to fraction form
    12,678.27/17,496.45 = 7,374.80/x
  3. Step 3: Cross multiply
    12,678.27x = 17,496.45 × 7,374.80
  4. Step 4: Simplify right side
    12,678.27x = 129,032,731.98
  5. Step 5: Solve for x
    x = 129,032,731.98/12,678.27
  6. Step 6: Final answer
    x = 10,177.47

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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.