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Finding the Fourth Proportional to 27,015.30, 40,559.40 and 21,474.90

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Solution

The fourth proportional to 27,015.30, 40,559.40 and 21,474.90 is: 32,241.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,015.30 : 40,559.40 = 21,474.90 : x
  2. Step 2: Convert to fraction form
    27,015.30/40,559.40 = 21,474.90/x
  3. Step 3: Cross multiply
    27,015.30x = 40,559.40 × 21,474.90
  4. Step 4: Simplify right side
    27,015.30x = 871,009,059.06
  5. Step 5: Solve for x
    x = 871,009,059.06/27,015.30
  6. Step 6: Final answer
    x = 32,241.32

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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.