Home / 30,361.28-41,906.08-20,686.74

Finding the Fourth Proportional to 30,361.28, 41,906.08 and 20,686.74

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Solution

The fourth proportional to 30,361.28, 41,906.08 and 20,686.74 is: 28,552.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,361.28 : 41,906.08 = 20,686.74 : x
  2. Step 2: Convert to fraction form
    30,361.28/41,906.08 = 20,686.74/x
  3. Step 3: Cross multiply
    30,361.28x = 41,906.08 × 20,686.74
  4. Step 4: Simplify right side
    30,361.28x = 866,899,868.42
  5. Step 5: Solve for x
    x = 866,899,868.42/30,361.28
  6. Step 6: Final answer
    x = 28,552.81

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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.