Home / 39,025.06-53,854.75-21,120.07

Finding the Fourth Proportional to 39,025.06, 53,854.75 and 21,120.07

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Solution

The fourth proportional to 39,025.06, 53,854.75 and 21,120.07 is: 29,145.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,025.06 : 53,854.75 = 21,120.07 : x
  2. Step 2: Convert to fraction form
    39,025.06/53,854.75 = 21,120.07/x
  3. Step 3: Cross multiply
    39,025.06x = 53,854.75 × 21,120.07
  4. Step 4: Simplify right side
    39,025.06x = 1,137,416,089.83
  5. Step 5: Solve for x
    x = 1,137,416,089.83/39,025.06
  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.