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Finding the Fourth Proportional to 21,604.78, 32,411.21 and 14,878.73

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Solution

The fourth proportional to 21,604.78, 32,411.21 and 14,878.73 is: 22,320.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604.78 : 32,411.21 = 14,878.73 : x
  2. Step 2: Convert to fraction form
    21,604.78/32,411.21 = 14,878.73/x
  3. Step 3: Cross multiply
    21,604.78x = 32,411.21 × 14,878.73
  4. Step 4: Simplify right side
    21,604.78x = 482,237,779.68
  5. Step 5: Solve for x
    x = 482,237,779.68/21,604.78
  6. Step 6: Final answer
    x = 22,320.88

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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.