Home / 21,883.74-30,157.43-15,905.94

Finding the Fourth Proportional to 21,883.74, 30,157.43 and 15,905.94

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Solution

The fourth proportional to 21,883.74, 30,157.43 and 15,905.94 is: 21,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.74 : 30,157.43 = 15,905.94 : x
  2. Step 2: Convert to fraction form
    21,883.74/30,157.43 = 15,905.94/x
  3. Step 3: Cross multiply
    21,883.74x = 30,157.43 × 15,905.94
  4. Step 4: Simplify right side
    21,883.74x = 479,682,192.60
  5. Step 5: Solve for x
    x = 479,682,192.60/21,883.74
  6. Step 6: Final answer
    x = 21,919.57

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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.