Home / 39,391.21-54,360.04-21,486.60

Finding the Fourth Proportional to 39,391.21, 54,360.04 and 21,486.60

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Solution

The fourth proportional to 39,391.21, 54,360.04 and 21,486.60 is: 29,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,391.21 : 54,360.04 = 21,486.60 : x
  2. Step 2: Convert to fraction form
    39,391.21/54,360.04 = 21,486.60/x
  3. Step 3: Cross multiply
    39,391.21x = 54,360.04 × 21,486.60
  4. Step 4: Simplify right side
    39,391.21x = 1,168,012,435.46
  5. Step 5: Solve for x
    x = 1,168,012,435.46/39,391.21
  6. Step 6: Final answer
    x = 29,651.60

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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.