Home / 27,986.40-38,622.24-15,411.60

Finding the Fourth Proportional to 27,986.40, 38,622.24 and 15,411.60

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Solution

The fourth proportional to 27,986.40, 38,622.24 and 15,411.60 is: 21,268.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.40 : 38,622.24 = 15,411.60 : x
  2. Step 2: Convert to fraction form
    27,986.40/38,622.24 = 15,411.60/x
  3. Step 3: Cross multiply
    27,986.40x = 38,622.24 × 15,411.60
  4. Step 4: Simplify right side
    27,986.40x = 595,230,513.98
  5. Step 5: Solve for x
    x = 595,230,513.98/27,986.40
  6. Step 6: Final answer
    x = 21,268.56

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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.