Home / 39,628.10-54,686.44-21,723.09

Finding the Fourth Proportional to 39,628.10, 54,686.44 and 21,723.09

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Solution

The fourth proportional to 39,628.10, 54,686.44 and 21,723.09 is: 29,977.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,628.10 : 54,686.44 = 21,723.09 : x
  2. Step 2: Convert to fraction form
    39,628.10/54,686.44 = 21,723.09/x
  3. Step 3: Cross multiply
    39,628.10x = 54,686.44 × 21,723.09
  4. Step 4: Simplify right side
    39,628.10x = 1,187,958,279.98
  5. Step 5: Solve for x
    x = 1,187,958,279.98/39,628.10
  6. Step 6: Final answer
    x = 29,977.67

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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.