Home / 21,890.52-30,208.86-11,954.52

Finding the Fourth Proportional to 21,890.52, 30,208.86 and 11,954.52

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Solution

The fourth proportional to 21,890.52, 30,208.86 and 11,954.52 is: 16,497.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.52 : 30,208.86 = 11,954.52 : x
  2. Step 2: Convert to fraction form
    21,890.52/30,208.86 = 11,954.52/x
  3. Step 3: Cross multiply
    21,890.52x = 30,208.86 × 11,954.52
  4. Step 4: Simplify right side
    21,890.52x = 361,132,421.05
  5. Step 5: Solve for x
    x = 361,132,421.05/21,890.52
  6. Step 6: Final answer
    x = 16,497.21

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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.