Home / 39,491-59,245.86-11,789.72

Finding the Fourth Proportional to 39,491, 59,245.86 and 11,789.72

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Solution

The fourth proportional to 39,491, 59,245.86 and 11,789.72 is: 17,687.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,491 : 59,245.86 = 11,789.72 : x
  2. Step 2: Convert to fraction form
    39,491/59,245.86 = 11,789.72/x
  3. Step 3: Cross multiply
    39,491x = 59,245.86 × 11,789.72
  4. Step 4: Simplify right side
    39,491x = 698,492,100.56
  5. Step 5: Solve for x
    x = 698,492,100.56/39,491
  6. Step 6: Final answer
    x = 17,687.37

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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.