Home / 19,805.51-29,708.28-4,812.54

Finding the Fourth Proportional to 19,805.51, 29,708.28 and 4,812.54

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Solution

The fourth proportional to 19,805.51, 29,708.28 and 4,812.54 is: 7,218.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.51 : 29,708.28 = 4,812.54 : x
  2. Step 2: Convert to fraction form
    19,805.51/29,708.28 = 4,812.54/x
  3. Step 3: Cross multiply
    19,805.51x = 29,708.28 × 4,812.54
  4. Step 4: Simplify right side
    19,805.51x = 142,972,285.83
  5. Step 5: Solve for x
    x = 142,972,285.83/19,805.51
  6. Step 6: Final answer
    x = 7,218.82

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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.