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Finding the Fourth Proportional to 26,955.40, 40,433.10 and 20,727.40

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Solution

The fourth proportional to 26,955.40, 40,433.10 and 20,727.40 is: 31,091.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,955.40 : 40,433.10 = 20,727.40 : x
  2. Step 2: Convert to fraction form
    26,955.40/40,433.10 = 20,727.40/x
  3. Step 3: Cross multiply
    26,955.40x = 40,433.10 × 20,727.40
  4. Step 4: Simplify right side
    26,955.40x = 838,073,036.94
  5. Step 5: Solve for x
    x = 838,073,036.94/26,955.40
  6. Step 6: Final answer
    x = 31,091.10

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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.