Home / 39,641.72-54,705.15-21,736.68

Finding the Fourth Proportional to 39,641.72, 54,705.15 and 21,736.68

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Solution

The fourth proportional to 39,641.72, 54,705.15 and 21,736.68 is: 29,996.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,641.72 : 54,705.15 = 21,736.68 : x
  2. Step 2: Convert to fraction form
    39,641.72/54,705.15 = 21,736.68/x
  3. Step 3: Cross multiply
    39,641.72x = 54,705.15 × 21,736.68
  4. Step 4: Simplify right side
    39,641.72x = 1,189,108,339.90
  5. Step 5: Solve for x
    x = 1,189,108,339.90/39,641.72
  6. Step 6: Final answer
    x = 29,996.39

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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.