Home / 26,021.78-39,038.88-8,491.64

Finding the Fourth Proportional to 26,021.78, 39,038.88 and 8,491.64

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Solution

The fourth proportional to 26,021.78, 39,038.88 and 8,491.64 is: 12,739.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,021.78 : 39,038.88 = 8,491.64 : x
  2. Step 2: Convert to fraction form
    26,021.78/39,038.88 = 8,491.64/x
  3. Step 3: Cross multiply
    26,021.78x = 39,038.88 × 8,491.64
  4. Step 4: Simplify right side
    26,021.78x = 331,504,114.96
  5. Step 5: Solve for x
    x = 331,504,114.96/26,021.78
  6. Step 6: Final answer
    x = 12,739.49

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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.