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Finding the Fourth Proportional to 19,135.26, 28,702.09 and 6,658.11

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Solution

The fourth proportional to 19,135.26, 28,702.09 and 6,658.11 is: 9,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,135.26 : 28,702.09 = 6,658.11 : x
  2. Step 2: Convert to fraction form
    19,135.26/28,702.09 = 6,658.11/x
  3. Step 3: Cross multiply
    19,135.26x = 28,702.09 × 6,658.11
  4. Step 4: Simplify right side
    19,135.26x = 191,101,672.45
  5. Step 5: Solve for x
    x = 191,101,672.45/19,135.26
  6. Step 6: Final answer
    x = 9,986.89

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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.