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Finding the Fourth Proportional to 19,889.42, 29,768.52 and 17,702.42

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Solution

The fourth proportional to 19,889.42, 29,768.52 and 17,702.42 is: 26,495.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,889.42 : 29,768.52 = 17,702.42 : x
  2. Step 2: Convert to fraction form
    19,889.42/29,768.52 = 17,702.42/x
  3. Step 3: Cross multiply
    19,889.42x = 29,768.52 × 17,702.42
  4. Step 4: Simplify right side
    19,889.42x = 526,974,843.82
  5. Step 5: Solve for x
    x = 526,974,843.82/19,889.42
  6. Step 6: Final answer
    x = 26,495.23

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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.