Home / 39,920.93-59,828.19-18,866.57

Finding the Fourth Proportional to 39,920.93, 59,828.19 and 18,866.57

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Solution

The fourth proportional to 39,920.93, 59,828.19 and 18,866.57 is: 28,274.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,920.93 : 59,828.19 = 18,866.57 : x
  2. Step 2: Convert to fraction form
    39,920.93/59,828.19 = 18,866.57/x
  3. Step 3: Cross multiply
    39,920.93x = 59,828.19 × 18,866.57
  4. Step 4: Simplify right side
    39,920.93x = 1,128,752,435.47
  5. Step 5: Solve for x
    x = 1,128,752,435.47/39,920.93
  6. Step 6: Final answer
    x = 28,274.71

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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.