Home / 19,122.54-28,651.43-11,711.52

Finding the Fourth Proportional to 19,122.54, 28,651.43 and 11,711.52

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Solution

The fourth proportional to 19,122.54, 28,651.43 and 11,711.52 is: 17,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,122.54 : 28,651.43 = 11,711.52 : x
  2. Step 2: Convert to fraction form
    19,122.54/28,651.43 = 11,711.52/x
  3. Step 3: Cross multiply
    19,122.54x = 28,651.43 × 11,711.52
  4. Step 4: Simplify right side
    19,122.54x = 335,551,736.92
  5. Step 5: Solve for x
    x = 335,551,736.92/19,122.54
  6. Step 6: Final answer
    x = 17,547.45

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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.