Home / 39,645.07-54,710.94-21,739.01

Finding the Fourth Proportional to 39,645.07, 54,710.94 and 21,739.01

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Solution

The fourth proportional to 39,645.07, 54,710.94 and 21,739.01 is: 30,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,645.07 : 54,710.94 = 21,739.01 : x
  2. Step 2: Convert to fraction form
    39,645.07/54,710.94 = 21,739.01/x
  3. Step 3: Cross multiply
    39,645.07x = 54,710.94 × 21,739.01
  4. Step 4: Simplify right side
    39,645.07x = 1,189,361,479.74
  5. Step 5: Solve for x
    x = 1,189,361,479.74/39,645.07
  6. Step 6: Final answer
    x = 30,000.24

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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.