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Finding the Fourth Proportional to 25,994.48, 38,971.84 and 21,538.46

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Solution

The fourth proportional to 25,994.48, 38,971.84 and 21,538.46 is: 32,291.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,994.48 : 38,971.84 = 21,538.46 : x
  2. Step 2: Convert to fraction form
    25,994.48/38,971.84 = 21,538.46/x
  3. Step 3: Cross multiply
    25,994.48x = 38,971.84 × 21,538.46
  4. Step 4: Simplify right side
    25,994.48x = 839,393,416.97
  5. Step 5: Solve for x
    x = 839,393,416.97/25,994.48
  6. Step 6: Final answer
    x = 32,291.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.