Home / 20,776.68-31,121.82-14,092.20

Finding the Fourth Proportional to 20,776.68, 31,121.82 and 14,092.20

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Solution

The fourth proportional to 20,776.68, 31,121.82 and 14,092.20 is: 21,109.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.68 : 31,121.82 = 14,092.20 : x
  2. Step 2: Convert to fraction form
    20,776.68/31,121.82 = 14,092.20/x
  3. Step 3: Cross multiply
    20,776.68x = 31,121.82 × 14,092.20
  4. Step 4: Simplify right side
    20,776.68x = 438,574,911.80
  5. Step 5: Solve for x
    x = 438,574,911.80/20,776.68
  6. Step 6: Final answer
    x = 21,109.00

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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.