Home / 21,171.50-29,217.68-12,097.58

Finding the Fourth Proportional to 21,171.50, 29,217.68 and 12,097.58

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Solution

The fourth proportional to 21,171.50, 29,217.68 and 12,097.58 is: 16,695.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.50 : 29,217.68 = 12,097.58 : x
  2. Step 2: Convert to fraction form
    21,171.50/29,217.68 = 12,097.58/x
  3. Step 3: Cross multiply
    21,171.50x = 29,217.68 × 12,097.58
  4. Step 4: Simplify right side
    21,171.50x = 353,463,060.00
  5. Step 5: Solve for x
    x = 353,463,060.00/21,171.50
  6. Step 6: Final answer
    x = 16,695.23

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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.