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Finding the Fourth Proportional to 17,602.40, 26,408.56 and 7,221.60

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Solution

The fourth proportional to 17,602.40, 26,408.56 and 7,221.60 is: 10,834.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,602.40 : 26,408.56 = 7,221.60 : x
  2. Step 2: Convert to fraction form
    17,602.40/26,408.56 = 7,221.60/x
  3. Step 3: Cross multiply
    17,602.40x = 26,408.56 × 7,221.60
  4. Step 4: Simplify right side
    17,602.40x = 190,712,056.90
  5. Step 5: Solve for x
    x = 190,712,056.90/17,602.40
  6. Step 6: Final answer
    x = 10,834.43

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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.