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Finding the Fourth Proportional to 12,999.33, 17,943.66 and 7,698.69

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Solution

The fourth proportional to 12,999.33, 17,943.66 and 7,698.69 is: 10,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.33 : 17,943.66 = 7,698.69 : x
  2. Step 2: Convert to fraction form
    12,999.33/17,943.66 = 7,698.69/x
  3. Step 3: Cross multiply
    12,999.33x = 17,943.66 × 7,698.69
  4. Step 4: Simplify right side
    12,999.33x = 138,142,675.81
  5. Step 5: Solve for x
    x = 138,142,675.81/12,999.33
  6. Step 6: Final answer
    x = 10,626.91

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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.