Home / 28,965.69-39,976.93-18,356.29

Finding the Fourth Proportional to 28,965.69, 39,976.93 and 18,356.29

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Solution

The fourth proportional to 28,965.69, 39,976.93 and 18,356.29 is: 25,334.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.69 : 39,976.93 = 18,356.29 : x
  2. Step 2: Convert to fraction form
    28,965.69/39,976.93 = 18,356.29/x
  3. Step 3: Cross multiply
    28,965.69x = 39,976.93 × 18,356.29
  4. Step 4: Simplify right side
    28,965.69x = 733,828,120.39
  5. Step 5: Solve for x
    x = 733,828,120.39/28,965.69
  6. Step 6: Final answer
    x = 25,334.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.