Home / 11,243.63-15,515.80-6,139.05

Finding the Fourth Proportional to 11,243.63, 15,515.80 and 6,139.05

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Solution

The fourth proportional to 11,243.63, 15,515.80 and 6,139.05 is: 8,471.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,243.63 : 15,515.80 = 6,139.05 : x
  2. Step 2: Convert to fraction form
    11,243.63/15,515.80 = 6,139.05/x
  3. Step 3: Cross multiply
    11,243.63x = 15,515.80 × 6,139.05
  4. Step 4: Simplify right side
    11,243.63x = 95,252,198.46
  5. Step 5: Solve for x
    x = 95,252,198.46/11,243.63
  6. Step 6: Final answer
    x = 8,471.66

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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.