Home / 39,716.38-54,808.58-21,812.51

Finding the Fourth Proportional to 39,716.38, 54,808.58 and 21,812.51

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Solution

The fourth proportional to 39,716.38, 54,808.58 and 21,812.51 is: 30,101.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.38 : 54,808.58 = 21,812.51 : x
  2. Step 2: Convert to fraction form
    39,716.38/54,808.58 = 21,812.51/x
  3. Step 3: Cross multiply
    39,716.38x = 54,808.58 × 21,812.51
  4. Step 4: Simplify right side
    39,716.38x = 1,195,512,699.34
  5. Step 5: Solve for x
    x = 1,195,512,699.34/39,716.38
  6. Step 6: Final answer
    x = 30,101.25

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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.