Home / 21,046.61-31,570.99-19,982.50

Finding the Fourth Proportional to 21,046.61, 31,570.99 and 19,982.50

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Solution

The fourth proportional to 21,046.61, 31,570.99 and 19,982.50 is: 29,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.61 : 31,570.99 = 19,982.50 : x
  2. Step 2: Convert to fraction form
    21,046.61/31,570.99 = 19,982.50/x
  3. Step 3: Cross multiply
    21,046.61x = 31,570.99 × 19,982.50
  4. Step 4: Simplify right side
    21,046.61x = 630,867,178.79
  5. Step 5: Solve for x
    x = 630,867,178.79/21,046.61
  6. Step 6: Final answer
    x = 29,974.76

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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.