Home / 27,685.86-38,193.20-18,121.54

Finding the Fourth Proportional to 27,685.86, 38,193.20 and 18,121.54

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Solution

The fourth proportional to 27,685.86, 38,193.20 and 18,121.54 is: 24,999.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,685.86 : 38,193.20 = 18,121.54 : x
  2. Step 2: Convert to fraction form
    27,685.86/38,193.20 = 18,121.54/x
  3. Step 3: Cross multiply
    27,685.86x = 38,193.20 × 18,121.54
  4. Step 4: Simplify right side
    27,685.86x = 692,119,601.53
  5. Step 5: Solve for x
    x = 692,119,601.53/27,685.86
  6. Step 6: Final answer
    x = 24,999.03

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Double scale
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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.