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Finding the Fourth Proportional to 12,377.58, 17,079.48 and 7,072.74

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Solution

The fourth proportional to 12,377.58, 17,079.48 and 7,072.74 is: 9,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,377.58 : 17,079.48 = 7,072.74 : x
  2. Step 2: Convert to fraction form
    12,377.58/17,079.48 = 7,072.74/x
  3. Step 3: Cross multiply
    12,377.58x = 17,079.48 × 7,072.74
  4. Step 4: Simplify right side
    12,377.58x = 120,798,721.38
  5. Step 5: Solve for x
    x = 120,798,721.38/12,377.58
  6. Step 6: Final answer
    x = 9,759.48

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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.