Home / 11,172.24-15,417.09-6,391.89

Finding the Fourth Proportional to 11,172.24, 15,417.09 and 6,391.89

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Solution

The fourth proportional to 11,172.24, 15,417.09 and 6,391.89 is: 8,820.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.24 : 15,417.09 = 6,391.89 : x
  2. Step 2: Convert to fraction form
    11,172.24/15,417.09 = 6,391.89/x
  3. Step 3: Cross multiply
    11,172.24x = 15,417.09 × 6,391.89
  4. Step 4: Simplify right side
    11,172.24x = 98,544,343.40
  5. Step 5: Solve for x
    x = 98,544,343.40/11,172.24
  6. Step 6: Final answer
    x = 8,820.46

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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.