Home / 21,219.74-31,829.66-7,895.66

Finding the Fourth Proportional to 21,219.74, 31,829.66 and 7,895.66

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Solution

The fourth proportional to 21,219.74, 31,829.66 and 7,895.66 is: 11,843.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.74 : 31,829.66 = 7,895.66 : x
  2. Step 2: Convert to fraction form
    21,219.74/31,829.66 = 7,895.66/x
  3. Step 3: Cross multiply
    21,219.74x = 31,829.66 × 7,895.66
  4. Step 4: Simplify right side
    21,219.74x = 251,315,974.65
  5. Step 5: Solve for x
    x = 251,315,974.65/21,219.74
  6. Step 6: Final answer
    x = 11,843.50

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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.