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Finding the Fourth Proportional to 19,889.55, 29,768.70 and 17,702.55

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Solution

The fourth proportional to 19,889.55, 29,768.70 and 17,702.55 is: 26,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,889.55 : 29,768.70 = 17,702.55 : x
  2. Step 2: Convert to fraction form
    19,889.55/29,768.70 = 17,702.55/x
  3. Step 3: Cross multiply
    19,889.55x = 29,768.70 × 17,702.55
  4. Step 4: Simplify right side
    19,889.55x = 526,981,900.19
  5. Step 5: Solve for x
    x = 526,981,900.19/19,889.55
  6. Step 6: Final answer
    x = 26,495.42

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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.