Home / 11,211.84-16,818.05-3,420.63

Finding the Fourth Proportional to 11,211.84, 16,818.05 and 3,420.63

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Solution

The fourth proportional to 11,211.84, 16,818.05 and 3,420.63 is: 5,131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.84 : 16,818.05 = 3,420.63 : x
  2. Step 2: Convert to fraction form
    11,211.84/16,818.05 = 3,420.63/x
  3. Step 3: Cross multiply
    11,211.84x = 16,818.05 × 3,420.63
  4. Step 4: Simplify right side
    11,211.84x = 57,528,326.37
  5. Step 5: Solve for x
    x = 57,528,326.37/11,211.84
  6. Step 6: Final answer
    x = 5,131.03

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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.