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Finding the Fourth Proportional to 39,190.70, 58,745.79 and 15,488.62

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Solution

The fourth proportional to 39,190.70, 58,745.79 and 15,488.62 is: 23,217.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,190.70 : 58,745.79 = 15,488.62 : x
  2. Step 2: Convert to fraction form
    39,190.70/58,745.79 = 15,488.62/x
  3. Step 3: Cross multiply
    39,190.70x = 58,745.79 × 15,488.62
  4. Step 4: Simplify right side
    39,190.70x = 909,891,071.05
  5. Step 5: Solve for x
    x = 909,891,071.05/39,190.70
  6. Step 6: Final answer
    x = 23,217.01

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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.