Home / 28,641.86-39,517.69-18,570.72

Finding the Fourth Proportional to 28,641.86, 39,517.69 and 18,570.72

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Solution

The fourth proportional to 28,641.86, 39,517.69 and 18,570.72 is: 25,622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,641.86 : 39,517.69 = 18,570.72 : x
  2. Step 2: Convert to fraction form
    28,641.86/39,517.69 = 18,570.72/x
  3. Step 3: Cross multiply
    28,641.86x = 39,517.69 × 18,570.72
  4. Step 4: Simplify right side
    28,641.86x = 733,872,092.62
  5. Step 5: Solve for x
    x = 733,872,092.62/28,641.86
  6. Step 6: Final answer
    x = 25,622.36

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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.