Home / 39,416.25-54,395.58-21,512.40

Finding the Fourth Proportional to 39,416.25, 54,395.58 and 21,512.40

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Solution

The fourth proportional to 39,416.25, 54,395.58 and 21,512.40 is: 29,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,416.25 : 54,395.58 = 21,512.40 : x
  2. Step 2: Convert to fraction form
    39,416.25/54,395.58 = 21,512.40/x
  3. Step 3: Cross multiply
    39,416.25x = 54,395.58 × 21,512.40
  4. Step 4: Simplify right side
    39,416.25x = 1,170,179,475.19
  5. Step 5: Solve for x
    x = 1,170,179,475.19/39,416.25
  6. Step 6: Final answer
    x = 29,687.74

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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.