Home / 20,691.84-28,583.56-19,923.74

Finding the Fourth Proportional to 20,691.84, 28,583.56 and 19,923.74

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Solution

The fourth proportional to 20,691.84, 28,583.56 and 19,923.74 is: 27,522.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.84 : 28,583.56 = 19,923.74 : x
  2. Step 2: Convert to fraction form
    20,691.84/28,583.56 = 19,923.74/x
  3. Step 3: Cross multiply
    20,691.84x = 28,583.56 × 19,923.74
  4. Step 4: Simplify right side
    20,691.84x = 569,491,175.18
  5. Step 5: Solve for x
    x = 569,491,175.18/20,691.84
  6. Step 6: Final answer
    x = 27,522.51

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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.