Home / 11,143.80-15,378.26-6,108.03

Finding the Fourth Proportional to 11,143.80, 15,378.26 and 6,108.03

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Solution

The fourth proportional to 11,143.80, 15,378.26 and 6,108.03 is: 8,428.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.80 : 15,378.26 = 6,108.03 : x
  2. Step 2: Convert to fraction form
    11,143.80/15,378.26 = 6,108.03/x
  3. Step 3: Cross multiply
    11,143.80x = 15,378.26 × 6,108.03
  4. Step 4: Simplify right side
    11,143.80x = 93,930,842.89
  5. Step 5: Solve for x
    x = 93,930,842.89/11,143.80
  6. Step 6: Final answer
    x = 8,428.98

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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.