Home / 21,771.19-30,043.54-12,211.41

Finding the Fourth Proportional to 21,771.19, 30,043.54 and 12,211.41

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Solution

The fourth proportional to 21,771.19, 30,043.54 and 12,211.41 is: 16,851.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.19 : 30,043.54 = 12,211.41 : x
  2. Step 2: Convert to fraction form
    21,771.19/30,043.54 = 12,211.41/x
  3. Step 3: Cross multiply
    21,771.19x = 30,043.54 × 12,211.41
  4. Step 4: Simplify right side
    21,771.19x = 366,873,984.79
  5. Step 5: Solve for x
    x = 366,873,984.79/21,771.19
  6. Step 6: Final answer
    x = 16,851.35

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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.