Home / 39,085.45-58,640.73-12,784.21

Finding the Fourth Proportional to 39,085.45, 58,640.73 and 12,784.21

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Solution

The fourth proportional to 39,085.45, 58,640.73 and 12,784.21 is: 19,180.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,085.45 : 58,640.73 = 12,784.21 : x
  2. Step 2: Convert to fraction form
    39,085.45/58,640.73 = 12,784.21/x
  3. Step 3: Cross multiply
    39,085.45x = 58,640.73 × 12,784.21
  4. Step 4: Simplify right side
    39,085.45x = 749,675,406.87
  5. Step 5: Solve for x
    x = 749,675,406.87/39,085.45
  6. Step 6: Final answer
    x = 19,180.42

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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.