Home / 39,213.97-54,113.84-21,308.59

Finding the Fourth Proportional to 39,213.97, 54,113.84 and 21,308.59

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Solution

The fourth proportional to 39,213.97, 54,113.84 and 21,308.59 is: 29,405.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,213.97 : 54,113.84 = 21,308.59 : x
  2. Step 2: Convert to fraction form
    39,213.97/54,113.84 = 21,308.59/x
  3. Step 3: Cross multiply
    39,213.97x = 54,113.84 × 21,308.59
  4. Step 4: Simplify right side
    39,213.97x = 1,153,089,366.50
  5. Step 5: Solve for x
    x = 1,153,089,366.50/39,213.97
  6. Step 6: Final answer
    x = 29,405.06

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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.