Home / 10,091.40-13,926.09-5,615.58

Finding the Fourth Proportional to 10,091.40, 13,926.09 and 5,615.58

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Solution

The fourth proportional to 10,091.40, 13,926.09 and 5,615.58 is: 7,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.40 : 13,926.09 = 5,615.58 : x
  2. Step 2: Convert to fraction form
    10,091.40/13,926.09 = 5,615.58/x
  3. Step 3: Cross multiply
    10,091.40x = 13,926.09 × 5,615.58
  4. Step 4: Simplify right side
    10,091.40x = 78,203,072.48
  5. Step 5: Solve for x
    x = 78,203,072.48/10,091.40
  6. Step 6: Final answer
    x = 7,749.48

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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.