Home / 39,874.82-55,027.28-21,969.67

Finding the Fourth Proportional to 39,874.82, 55,027.28 and 21,969.67

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Solution

The fourth proportional to 39,874.82, 55,027.28 and 21,969.67 is: 30,318.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.82 : 55,027.28 = 21,969.67 : x
  2. Step 2: Convert to fraction form
    39,874.82/55,027.28 = 21,969.67/x
  3. Step 3: Cross multiply
    39,874.82x = 55,027.28 × 21,969.67
  4. Step 4: Simplify right side
    39,874.82x = 1,208,931,182.60
  5. Step 5: Solve for x
    x = 1,208,931,182.60/39,874.82
  6. Step 6: Final answer
    x = 30,318.16

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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.