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Finding the Fourth Proportional to 18,709.38, 25,820.47 and 10,754.17

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Solution

The fourth proportional to 18,709.38, 25,820.47 and 10,754.17 is: 14,841.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.38 : 25,820.47 = 10,754.17 : x
  2. Step 2: Convert to fraction form
    18,709.38/25,820.47 = 10,754.17/x
  3. Step 3: Cross multiply
    18,709.38x = 25,820.47 × 10,754.17
  4. Step 4: Simplify right side
    18,709.38x = 277,677,672.75
  5. Step 5: Solve for x
    x = 277,677,672.75/18,709.38
  6. Step 6: Final answer
    x = 14,841.63

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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.