Home / 39,764.60-54,874.05-21,859.62

Finding the Fourth Proportional to 39,764.60, 54,874.05 and 21,859.62

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Solution

The fourth proportional to 39,764.60, 54,874.05 and 21,859.62 is: 30,165.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,764.60 : 54,874.05 = 21,859.62 : x
  2. Step 2: Convert to fraction form
    39,764.60/54,874.05 = 21,859.62/x
  3. Step 3: Cross multiply
    39,764.60x = 54,874.05 × 21,859.62
  4. Step 4: Simplify right side
    39,764.60x = 1,199,525,551.84
  5. Step 5: Solve for x
    x = 1,199,525,551.84/39,764.60
  6. Step 6: Final answer
    x = 30,165.67

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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.