Home / 19,143.79-28,716.23-5,292.79

Finding the Fourth Proportional to 19,143.79, 28,716.23 and 5,292.79

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Solution

The fourth proportional to 19,143.79, 28,716.23 and 5,292.79 is: 7,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.79 : 28,716.23 = 5,292.79 : x
  2. Step 2: Convert to fraction form
    19,143.79/28,716.23 = 5,292.79/x
  3. Step 3: Cross multiply
    19,143.79x = 28,716.23 × 5,292.79
  4. Step 4: Simplify right side
    19,143.79x = 151,988,948.52
  5. Step 5: Solve for x
    x = 151,988,948.52/19,143.79
  6. Step 6: Final answer
    x = 7,939.33

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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.