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Finding the Fourth Proportional to 18,652.38, 25,740.77 and 11,479.63

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Solution

The fourth proportional to 18,652.38, 25,740.77 and 11,479.63 is: 15,842.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.38 : 25,740.77 = 11,479.63 : x
  2. Step 2: Convert to fraction form
    18,652.38/25,740.77 = 11,479.63/x
  3. Step 3: Cross multiply
    18,652.38x = 25,740.77 × 11,479.63
  4. Step 4: Simplify right side
    18,652.38x = 295,494,515.52
  5. Step 5: Solve for x
    x = 295,494,515.52/18,652.38
  6. Step 6: Final answer
    x = 15,842.19

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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.