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Finding the Fourth Proportional to 19,914.40, 29,936.40 and 17,063.20

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Solution

The fourth proportional to 19,914.40, 29,936.40 and 17,063.20 is: 25,650.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,914.40 : 29,936.40 = 17,063.20 : x
  2. Step 2: Convert to fraction form
    19,914.40/29,936.40 = 17,063.20/x
  3. Step 3: Cross multiply
    19,914.40x = 29,936.40 × 17,063.20
  4. Step 4: Simplify right side
    19,914.40x = 510,810,780.48
  5. Step 5: Solve for x
    x = 510,810,780.48/19,914.40
  6. Step 6: Final answer
    x = 25,650.32

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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.