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Finding the Fourth Proportional to 21,658.77, 32,469.17 and 10,408.51

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Solution

The fourth proportional to 21,658.77, 32,469.17 and 10,408.51 is: 15,603.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.77 : 32,469.17 = 10,408.51 : x
  2. Step 2: Convert to fraction form
    21,658.77/32,469.17 = 10,408.51/x
  3. Step 3: Cross multiply
    21,658.77x = 32,469.17 × 10,408.51
  4. Step 4: Simplify right side
    21,658.77x = 337,955,544.31
  5. Step 5: Solve for x
    x = 337,955,544.31/21,658.77
  6. Step 6: Final answer
    x = 15,603.64

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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.