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Finding the Fourth Proportional to 22,402.40, 33,603.60 and 18,903.20

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Solution

The fourth proportional to 22,402.40, 33,603.60 and 18,903.20 is: 28,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,402.40 : 33,603.60 = 18,903.20 : x
  2. Step 2: Convert to fraction form
    22,402.40/33,603.60 = 18,903.20/x
  3. Step 3: Cross multiply
    22,402.40x = 33,603.60 × 18,903.20
  4. Step 4: Simplify right side
    22,402.40x = 635,215,571.52
  5. Step 5: Solve for x
    x = 635,215,571.52/22,402.40
  6. Step 6: Final answer
    x = 28,354.80

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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.