Home / 11,820.40-17,722.36-5,243.12

Finding the Fourth Proportional to 11,820.40, 17,722.36 and 5,243.12

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Solution

The fourth proportional to 11,820.40, 17,722.36 and 5,243.12 is: 7,861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.40 : 17,722.36 = 5,243.12 : x
  2. Step 2: Convert to fraction form
    11,820.40/17,722.36 = 5,243.12/x
  3. Step 3: Cross multiply
    11,820.40x = 17,722.36 × 5,243.12
  4. Step 4: Simplify right side
    11,820.40x = 92,920,460.16
  5. Step 5: Solve for x
    x = 92,920,460.16/11,820.40
  6. Step 6: Final answer
    x = 7,861.03

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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.