Home / 19,340.74-28,985.19-8,929.54

Finding the Fourth Proportional to 19,340.74, 28,985.19 and 8,929.54

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Solution

The fourth proportional to 19,340.74, 28,985.19 and 8,929.54 is: 13,382.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,340.74 : 28,985.19 = 8,929.54 : x
  2. Step 2: Convert to fraction form
    19,340.74/28,985.19 = 8,929.54/x
  3. Step 3: Cross multiply
    19,340.74x = 28,985.19 × 8,929.54
  4. Step 4: Simplify right side
    19,340.74x = 258,824,413.51
  5. Step 5: Solve for x
    x = 258,824,413.51/19,340.74
  6. Step 6: Final answer
    x = 13,382.34

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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.