Home / 21,453.08-29,600.42-12,956.58

Finding the Fourth Proportional to 21,453.08, 29,600.42 and 12,956.58

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Solution

The fourth proportional to 21,453.08, 29,600.42 and 12,956.58 is: 17,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.08 : 29,600.42 = 12,956.58 : x
  2. Step 2: Convert to fraction form
    21,453.08/29,600.42 = 12,956.58/x
  3. Step 3: Cross multiply
    21,453.08x = 29,600.42 × 12,956.58
  4. Step 4: Simplify right side
    21,453.08x = 383,520,144.98
  5. Step 5: Solve for x
    x = 383,520,144.98/21,453.08
  6. Step 6: Final answer
    x = 17,877.16

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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.