Home / 39,872.82-55,024.52-21,967.67

Finding the Fourth Proportional to 39,872.82, 55,024.52 and 21,967.67

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Solution

The fourth proportional to 39,872.82, 55,024.52 and 21,967.67 is: 30,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872.82 : 55,024.52 = 21,967.67 : x
  2. Step 2: Convert to fraction form
    39,872.82/55,024.52 = 21,967.67/x
  3. Step 3: Cross multiply
    39,872.82x = 55,024.52 × 21,967.67
  4. Step 4: Simplify right side
    39,872.82x = 1,208,760,524.99
  5. Step 5: Solve for x
    x = 1,208,760,524.99/39,872.82
  6. Step 6: Final answer
    x = 30,315.40

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1.5x scale

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.