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Finding the Fourth Proportional to 19,658.62, 27,128.88 and 10,706.12

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Solution

The fourth proportional to 19,658.62, 27,128.88 and 10,706.12 is: 14,774.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.62 : 27,128.88 = 10,706.12 : x
  2. Step 2: Convert to fraction form
    19,658.62/27,128.88 = 10,706.12/x
  3. Step 3: Cross multiply
    19,658.62x = 27,128.88 × 10,706.12
  4. Step 4: Simplify right side
    19,658.62x = 290,445,044.75
  5. Step 5: Solve for x
    x = 290,445,044.75/19,658.62
  6. Step 6: Final answer
    x = 14,774.44

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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.