Home / 39,740.96-54,842.64-21,836.32

Finding the Fourth Proportional to 39,740.96, 54,842.64 and 21,836.32

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Solution

The fourth proportional to 39,740.96, 54,842.64 and 21,836.32 is: 30,134.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,740.96 : 54,842.64 = 21,836.32 : x
  2. Step 2: Convert to fraction form
    39,740.96/54,842.64 = 21,836.32/x
  3. Step 3: Cross multiply
    39,740.96x = 54,842.64 × 21,836.32
  4. Step 4: Simplify right side
    39,740.96x = 1,197,561,436.68
  5. Step 5: Solve for x
    x = 1,197,561,436.68/39,740.96
  6. Step 6: Final answer
    x = 30,134.18

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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.