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Finding the Fourth Proportional to 39,647.32, 54,714.05 and 21,741.26

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Solution

The fourth proportional to 39,647.32, 54,714.05 and 21,741.26 is: 30,003.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,647.32 : 54,714.05 = 21,741.26 : x
  2. Step 2: Convert to fraction form
    39,647.32/54,714.05 = 21,741.26/x
  3. Step 3: Cross multiply
    39,647.32x = 54,714.05 × 21,741.26
  4. Step 4: Simplify right side
    39,647.32x = 1,189,552,085.96
  5. Step 5: Solve for x
    x = 1,189,552,085.96/39,647.32
  6. Step 6: Final answer
    x = 30,003.34

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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.