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Finding the Fourth Proportional to 26,803.80, 40,205.70 and 20,595.15

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Solution

The fourth proportional to 26,803.80, 40,205.70 and 20,595.15 is: 30,892.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,803.80 : 40,205.70 = 20,595.15 : x
  2. Step 2: Convert to fraction form
    26,803.80/40,205.70 = 20,595.15/x
  3. Step 3: Cross multiply
    26,803.80x = 40,205.70 × 20,595.15
  4. Step 4: Simplify right side
    26,803.80x = 828,042,422.36
  5. Step 5: Solve for x
    x = 828,042,422.36/26,803.80
  6. Step 6: Final answer
    x = 30,892.73

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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.