Home / 20,156.89-27,797.43-15,368.42

Finding the Fourth Proportional to 20,156.89, 27,797.43 and 15,368.42

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Solution

The fourth proportional to 20,156.89, 27,797.43 and 15,368.42 is: 21,193.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.89 : 27,797.43 = 15,368.42 : x
  2. Step 2: Convert to fraction form
    20,156.89/27,797.43 = 15,368.42/x
  3. Step 3: Cross multiply
    20,156.89x = 27,797.43 × 15,368.42
  4. Step 4: Simplify right side
    20,156.89x = 427,202,579.16
  5. Step 5: Solve for x
    x = 427,202,579.16/20,156.89
  6. Step 6: Final answer
    x = 21,193.88

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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.