Home / 18,841.28-28,266.57-13,305.47

Finding the Fourth Proportional to 18,841.28, 28,266.57 and 13,305.47

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Solution

The fourth proportional to 18,841.28, 28,266.57 and 13,305.47 is: 19,961.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.28 : 28,266.57 = 13,305.47 : x
  2. Step 2: Convert to fraction form
    18,841.28/28,266.57 = 13,305.47/x
  3. Step 3: Cross multiply
    18,841.28x = 28,266.57 × 13,305.47
  4. Step 4: Simplify right side
    18,841.28x = 376,099,857.81
  5. Step 5: Solve for x
    x = 376,099,857.81/18,841.28
  6. Step 6: Final answer
    x = 19,961.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.