Home / 39,138.75-58,716.63-12,842.50

Finding the Fourth Proportional to 39,138.75, 58,716.63 and 12,842.50

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Solution

The fourth proportional to 39,138.75, 58,716.63 and 12,842.50 is: 19,266.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138.75 : 58,716.63 = 12,842.50 : x
  2. Step 2: Convert to fraction form
    39,138.75/58,716.63 = 12,842.50/x
  3. Step 3: Cross multiply
    39,138.75x = 58,716.63 × 12,842.50
  4. Step 4: Simplify right side
    39,138.75x = 754,068,320.78
  5. Step 5: Solve for x
    x = 754,068,320.78/39,138.75
  6. Step 6: Final answer
    x = 19,266.54

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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.