Home / 20,361.51-28,096.28-11,406.81

Finding the Fourth Proportional to 20,361.51, 28,096.28 and 11,406.81

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Solution

The fourth proportional to 20,361.51, 28,096.28 and 11,406.81 is: 15,739.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.51 : 28,096.28 = 11,406.81 : x
  2. Step 2: Convert to fraction form
    20,361.51/28,096.28 = 11,406.81/x
  3. Step 3: Cross multiply
    20,361.51x = 28,096.28 × 11,406.81
  4. Step 4: Simplify right side
    20,361.51x = 320,488,927.67
  5. Step 5: Solve for x
    x = 320,488,927.67/20,361.51
  6. Step 6: Final answer
    x = 15,739.94

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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.