Home / 39,919.86-55,085.16-22,013.78

Finding the Fourth Proportional to 39,919.86, 55,085.16 and 22,013.78

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Solution

The fourth proportional to 39,919.86, 55,085.16 and 22,013.78 is: 30,376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,919.86 : 55,085.16 = 22,013.78 : x
  2. Step 2: Convert to fraction form
    39,919.86/55,085.16 = 22,013.78/x
  3. Step 3: Cross multiply
    39,919.86x = 55,085.16 × 22,013.78
  4. Step 4: Simplify right side
    39,919.86x = 1,212,632,593.50
  5. Step 5: Solve for x
    x = 1,212,632,593.50/39,919.86
  6. Step 6: Final answer
    x = 30,376.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.