Home / 39,025.56-53,855.34-21,120.60

Finding the Fourth Proportional to 39,025.56, 53,855.34 and 21,120.60

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Solution

The fourth proportional to 39,025.56, 53,855.34 and 21,120.60 is: 29,146.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,025.56 : 53,855.34 = 21,120.60 : x
  2. Step 2: Convert to fraction form
    39,025.56/53,855.34 = 21,120.60/x
  3. Step 3: Cross multiply
    39,025.56x = 53,855.34 × 21,120.60
  4. Step 4: Simplify right side
    39,025.56x = 1,137,457,094.00
  5. Step 5: Solve for x
    x = 1,137,457,094.00/39,025.56
  6. Step 6: Final answer
    x = 29,146.46

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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.