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Finding the Fourth Proportional to 22,415.40, 33,687.90 and 19,564.20

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Solution

The fourth proportional to 22,415.40, 33,687.90 and 19,564.20 is: 29,402.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,415.40 : 33,687.90 = 19,564.20 : x
  2. Step 2: Convert to fraction form
    22,415.40/33,687.90 = 19,564.20/x
  3. Step 3: Cross multiply
    22,415.40x = 33,687.90 × 19,564.20
  4. Step 4: Simplify right side
    22,415.40x = 659,076,813.18
  5. Step 5: Solve for x
    x = 659,076,813.18/22,415.40
  6. Step 6: Final answer
    x = 29,402.86

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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.