Home / 10,659.87-14,693.00-7,121.79

Finding the Fourth Proportional to 10,659.87, 14,693.00 and 7,121.79

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Solution

The fourth proportional to 10,659.87, 14,693.00 and 7,121.79 is: 9,816.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,659.87 : 14,693.00 = 7,121.79 : x
  2. Step 2: Convert to fraction form
    10,659.87/14,693.00 = 7,121.79/x
  3. Step 3: Cross multiply
    10,659.87x = 14,693.00 × 7,121.79
  4. Step 4: Simplify right side
    10,659.87x = 104,640,424.86
  5. Step 5: Solve for x
    x = 104,640,424.86/10,659.87
  6. Step 6: Final answer
    x = 9,816.29

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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.