Home / 39,135.21-58,650.90-21,320.17

Finding the Fourth Proportional to 39,135.21, 58,650.90 and 21,320.17

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Solution

The fourth proportional to 39,135.21, 58,650.90 and 21,320.17 is: 31,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,135.21 : 58,650.90 = 21,320.17 : x
  2. Step 2: Convert to fraction form
    39,135.21/58,650.90 = 21,320.17/x
  3. Step 3: Cross multiply
    39,135.21x = 58,650.90 × 21,320.17
  4. Step 4: Simplify right side
    39,135.21x = 1,250,447,158.65
  5. Step 5: Solve for x
    x = 1,250,447,158.65/39,135.21
  6. Step 6: Final answer
    x = 31,951.97

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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.