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Finding the Fourth Proportional to 12,081.69, 16,670.97 and 7,045.11

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Solution

The fourth proportional to 12,081.69, 16,670.97 and 7,045.11 is: 9,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.69 : 16,670.97 = 7,045.11 : x
  2. Step 2: Convert to fraction form
    12,081.69/16,670.97 = 7,045.11/x
  3. Step 3: Cross multiply
    12,081.69x = 16,670.97 × 7,045.11
  4. Step 4: Simplify right side
    12,081.69x = 117,448,817.46
  5. Step 5: Solve for x
    x = 117,448,817.46/12,081.69
  6. Step 6: Final answer
    x = 9,721.22

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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.