Home / 21,021.90-31,532.76-6,982.98

Finding the Fourth Proportional to 21,021.90, 31,532.76 and 6,982.98

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Solution

The fourth proportional to 21,021.90, 31,532.76 and 6,982.98 is: 10,474.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.90 : 31,532.76 = 6,982.98 : x
  2. Step 2: Convert to fraction form
    21,021.90/31,532.76 = 6,982.98/x
  3. Step 3: Cross multiply
    21,021.90x = 31,532.76 × 6,982.98
  4. Step 4: Simplify right side
    21,021.90x = 220,192,514.18
  5. Step 5: Solve for x
    x = 220,192,514.18/21,021.90
  6. Step 6: Final answer
    x = 10,474.44

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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.