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Finding the Fourth Proportional to 21,455.35, 29,608.35 and 12,023.98

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Solution

The fourth proportional to 21,455.35, 29,608.35 and 12,023.98 is: 16,593.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.35 : 29,608.35 = 12,023.98 : x
  2. Step 2: Convert to fraction form
    21,455.35/29,608.35 = 12,023.98/x
  3. Step 3: Cross multiply
    21,455.35x = 29,608.35 × 12,023.98
  4. Step 4: Simplify right side
    21,455.35x = 356,010,208.23
  5. Step 5: Solve for x
    x = 356,010,208.23/21,455.35
  6. Step 6: Final answer
    x = 16,593.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.