Home / 19,805.77-29,708.66-4,812.81

Finding the Fourth Proportional to 19,805.77, 29,708.66 and 4,812.81

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Solution

The fourth proportional to 19,805.77, 29,708.66 and 4,812.81 is: 7,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.77 : 29,708.66 = 4,812.81 : x
  2. Step 2: Convert to fraction form
    19,805.77/29,708.66 = 4,812.81/x
  3. Step 3: Cross multiply
    19,805.77x = 29,708.66 × 4,812.81
  4. Step 4: Simplify right side
    19,805.77x = 142,982,135.93
  5. Step 5: Solve for x
    x = 142,982,135.93/19,805.77
  6. Step 6: Final answer
    x = 7,219.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.