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Finding the Fourth Proportional to 23,985.80, 36,021.90 and 17,419.40

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Solution

The fourth proportional to 23,985.80, 36,021.90 and 17,419.40 is: 26,160.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,985.80 : 36,021.90 = 17,419.40 : x
  2. Step 2: Convert to fraction form
    23,985.80/36,021.90 = 17,419.40/x
  3. Step 3: Cross multiply
    23,985.80x = 36,021.90 × 17,419.40
  4. Step 4: Simplify right side
    23,985.80x = 627,479,884.86
  5. Step 5: Solve for x
    x = 627,479,884.86/23,985.80
  6. Step 6: Final answer
    x = 26,160.47

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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.