Home / 20,253.15-27,938.12-11,868.03

Finding the Fourth Proportional to 20,253.15, 27,938.12 and 11,868.03

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Solution

The fourth proportional to 20,253.15, 27,938.12 and 11,868.03 is: 16,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.15 : 27,938.12 = 11,868.03 : x
  2. Step 2: Convert to fraction form
    20,253.15/27,938.12 = 11,868.03/x
  3. Step 3: Cross multiply
    20,253.15x = 27,938.12 × 11,868.03
  4. Step 4: Simplify right side
    20,253.15x = 331,570,386.96
  5. Step 5: Solve for x
    x = 331,570,386.96/20,253.15
  6. Step 6: Final answer
    x = 16,371.30

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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.