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Finding the Fourth Proportional to 19,608.60, 29,369.70 and 17,419.80

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Solution

The fourth proportional to 19,608.60, 29,369.70 and 17,419.80 is: 26,091.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,608.60 : 29,369.70 = 17,419.80 : x
  2. Step 2: Convert to fraction form
    19,608.60/29,369.70 = 17,419.80/x
  3. Step 3: Cross multiply
    19,608.60x = 29,369.70 × 17,419.80
  4. Step 4: Simplify right side
    19,608.60x = 511,614,300.06
  5. Step 5: Solve for x
    x = 511,614,300.06/19,608.60
  6. Step 6: Final answer
    x = 26,091.32

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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.