Home / 26,687.34-36,818.79-20,556.90

Finding the Fourth Proportional to 26,687.34, 36,818.79 and 20,556.90

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Solution

The fourth proportional to 26,687.34, 36,818.79 and 20,556.90 is: 28,361.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,687.34 : 36,818.79 = 20,556.90 : x
  2. Step 2: Convert to fraction form
    26,687.34/36,818.79 = 20,556.90/x
  3. Step 3: Cross multiply
    26,687.34x = 36,818.79 × 20,556.90
  4. Step 4: Simplify right side
    26,687.34x = 756,880,184.15
  5. Step 5: Solve for x
    x = 756,880,184.15/26,687.34
  6. Step 6: Final answer
    x = 28,361.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.