Home / 38,675.09-53,371.44-21,679.31

Finding the Fourth Proportional to 38,675.09, 53,371.44 and 21,679.31

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Solution

The fourth proportional to 38,675.09, 53,371.44 and 21,679.31 is: 29,917.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,675.09 : 53,371.44 = 21,679.31 : x
  2. Step 2: Convert to fraction form
    38,675.09/53,371.44 = 21,679.31/x
  3. Step 3: Cross multiply
    38,675.09x = 53,371.44 × 21,679.31
  4. Step 4: Simplify right side
    38,675.09x = 1,157,056,126.34
  5. Step 5: Solve for x
    x = 1,157,056,126.34/38,675.09
  6. Step 6: Final answer
    x = 29,917.35

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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.