Home / 39,645.51-54,710.33-21,740.37

Finding the Fourth Proportional to 39,645.51, 54,710.33 and 21,740.37

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Solution

The fourth proportional to 39,645.51, 54,710.33 and 21,740.37 is: 30,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,645.51 : 54,710.33 = 21,740.37 : x
  2. Step 2: Convert to fraction form
    39,645.51/54,710.33 = 21,740.37/x
  3. Step 3: Cross multiply
    39,645.51x = 54,710.33 × 21,740.37
  4. Step 4: Simplify right side
    39,645.51x = 1,189,422,708.32
  5. Step 5: Solve for x
    x = 1,189,422,708.32/39,645.51
  6. Step 6: Final answer
    x = 30,001.45

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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.