Home / 21,000.66-31,500.99-19,717.62

Finding the Fourth Proportional to 21,000.66, 31,500.99 and 19,717.62

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Solution

The fourth proportional to 21,000.66, 31,500.99 and 19,717.62 is: 29,576.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.66 : 31,500.99 = 19,717.62 : x
  2. Step 2: Convert to fraction form
    21,000.66/31,500.99 = 19,717.62/x
  3. Step 3: Cross multiply
    21,000.66x = 31,500.99 × 19,717.62
  4. Step 4: Simplify right side
    21,000.66x = 621,124,550.44
  5. Step 5: Solve for x
    x = 621,124,550.44/21,000.66
  6. Step 6: Final answer
    x = 29,576.43

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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.