Home / 21,962.25-30,307.68-11,890.71

Finding the Fourth Proportional to 21,962.25, 30,307.68 and 11,890.71

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Solution

The fourth proportional to 21,962.25, 30,307.68 and 11,890.71 is: 16,409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.25 : 30,307.68 = 11,890.71 : x
  2. Step 2: Convert to fraction form
    21,962.25/30,307.68 = 11,890.71/x
  3. Step 3: Cross multiply
    21,962.25x = 30,307.68 × 11,890.71
  4. Step 4: Simplify right side
    21,962.25x = 360,379,833.65
  5. Step 5: Solve for x
    x = 360,379,833.65/21,962.25
  6. Step 6: Final answer
    x = 16,409.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.