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Finding the Fourth Proportional to 38,677.56, 53,376.12 and 21,910.56

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Solution

The fourth proportional to 38,677.56, 53,376.12 and 21,910.56 is: 30,237.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,677.56 : 53,376.12 = 21,910.56 : x
  2. Step 2: Convert to fraction form
    38,677.56/53,376.12 = 21,910.56/x
  3. Step 3: Cross multiply
    38,677.56x = 53,376.12 × 21,910.56
  4. Step 4: Simplify right side
    38,677.56x = 1,169,500,679.83
  5. Step 5: Solve for x
    x = 1,169,500,679.83/38,677.56
  6. Step 6: Final answer
    x = 30,237.19

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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.