Home / 39,416.64-54,395.13-21,512.03

Finding the Fourth Proportional to 39,416.64, 54,395.13 and 21,512.03

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Solution

The fourth proportional to 39,416.64, 54,395.13 and 21,512.03 is: 29,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,416.64 : 54,395.13 = 21,512.03 : x
  2. Step 2: Convert to fraction form
    39,416.64/54,395.13 = 21,512.03/x
  3. Step 3: Cross multiply
    39,416.64x = 54,395.13 × 21,512.03
  4. Step 4: Simplify right side
    39,416.64x = 1,170,149,396.44
  5. Step 5: Solve for x
    x = 1,170,149,396.44/39,416.64
  6. Step 6: Final answer
    x = 29,686.69

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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.