Home / 39,025.22-53,854.61-21,120.21

Finding the Fourth Proportional to 39,025.22, 53,854.61 and 21,120.21

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Solution

The fourth proportional to 39,025.22, 53,854.61 and 21,120.21 is: 29,145.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,025.22 : 53,854.61 = 21,120.21 : x
  2. Step 2: Convert to fraction form
    39,025.22/53,854.61 = 21,120.21/x
  3. Step 3: Cross multiply
    39,025.22x = 53,854.61 × 21,120.21
  4. Step 4: Simplify right side
    39,025.22x = 1,137,420,567.07
  5. Step 5: Solve for x
    x = 1,137,420,567.07/39,025.22
  6. Step 6: Final answer
    x = 29,145.79

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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.