Home / 28,388.44-39,176.04-15,641.80

Finding the Fourth Proportional to 28,388.44, 39,176.04 and 15,641.80

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Solution

The fourth proportional to 28,388.44, 39,176.04 and 15,641.80 is: 21,585.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.44 : 39,176.04 = 15,641.80 : x
  2. Step 2: Convert to fraction form
    28,388.44/39,176.04 = 15,641.80/x
  3. Step 3: Cross multiply
    28,388.44x = 39,176.04 × 15,641.80
  4. Step 4: Simplify right side
    28,388.44x = 612,783,782.47
  5. Step 5: Solve for x
    x = 612,783,782.47/28,388.44
  6. Step 6: Final answer
    x = 21,585.68

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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.