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Finding the Fourth Proportional to 19,801.89, 29,702.84 and 5,010.89

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Solution

The fourth proportional to 19,801.89, 29,702.84 and 5,010.89 is: 7,516.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,801.89 : 29,702.84 = 5,010.89 : x
  2. Step 2: Convert to fraction form
    19,801.89/29,702.84 = 5,010.89/x
  3. Step 3: Cross multiply
    19,801.89x = 29,702.84 × 5,010.89
  4. Step 4: Simplify right side
    19,801.89x = 148,837,490.36
  5. Step 5: Solve for x
    x = 148,837,490.36/19,801.89
  6. Step 6: Final answer
    x = 7,516.33

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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.