Home / 11,147.19-16,721.15-4,128.98

Finding the Fourth Proportional to 11,147.19, 16,721.15 and 4,128.98

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Solution

The fourth proportional to 11,147.19, 16,721.15 and 4,128.98 is: 6,193.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.19 : 16,721.15 = 4,128.98 : x
  2. Step 2: Convert to fraction form
    11,147.19/16,721.15 = 4,128.98/x
  3. Step 3: Cross multiply
    11,147.19x = 16,721.15 × 4,128.98
  4. Step 4: Simplify right side
    11,147.19x = 69,041,189.68
  5. Step 5: Solve for x
    x = 69,041,189.68/11,147.19
  6. Step 6: Final answer
    x = 6,193.60

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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.