Home / 39,458.34-54,450.43-21,553.09

Finding the Fourth Proportional to 39,458.34, 54,450.43 and 21,553.09

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Solution

The fourth proportional to 39,458.34, 54,450.43 and 21,553.09 is: 29,742.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,458.34 : 54,450.43 = 21,553.09 : x
  2. Step 2: Convert to fraction form
    39,458.34/54,450.43 = 21,553.09/x
  3. Step 3: Cross multiply
    39,458.34x = 54,450.43 × 21,553.09
  4. Step 4: Simplify right side
    39,458.34x = 1,173,574,828.32
  5. Step 5: Solve for x
    x = 1,173,574,828.32/39,458.34
  6. Step 6: Final answer
    x = 29,742.12

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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.