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Finding the Fourth Proportional to 26,867.94, 40,301.92 and 20,639.10

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Solution

The fourth proportional to 26,867.94, 40,301.92 and 20,639.10 is: 30,958.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,867.94 : 40,301.92 = 20,639.10 : x
  2. Step 2: Convert to fraction form
    26,867.94/40,301.92 = 20,639.10/x
  3. Step 3: Cross multiply
    26,867.94x = 40,301.92 × 20,639.10
  4. Step 4: Simplify right side
    26,867.94x = 831,795,534.00
  5. Step 5: Solve for x
    x = 831,795,534.00/26,867.94
  6. Step 6: Final answer
    x = 30,958.67

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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.