Home / 39,213.20-54,114.44-21,308.35

Finding the Fourth Proportional to 39,213.20, 54,114.44 and 21,308.35

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Solution

The fourth proportional to 39,213.20, 54,114.44 and 21,308.35 is: 29,405.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,213.20 : 54,114.44 = 21,308.35 : x
  2. Step 2: Convert to fraction form
    39,213.20/54,114.44 = 21,308.35/x
  3. Step 3: Cross multiply
    39,213.20x = 54,114.44 × 21,308.35
  4. Step 4: Simplify right side
    39,213.20x = 1,153,089,427.57
  5. Step 5: Solve for x
    x = 1,153,089,427.57/39,213.20
  6. Step 6: Final answer
    x = 29,405.64

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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.