Home / 21,684.79-32,343.96-21,028.51

Finding the Fourth Proportional to 21,684.79, 32,343.96 and 21,028.51

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Solution

The fourth proportional to 21,684.79, 32,343.96 and 21,028.51 is: 31,365.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684.79 : 32,343.96 = 21,028.51 : x
  2. Step 2: Convert to fraction form
    21,684.79/32,343.96 = 21,028.51/x
  3. Step 3: Cross multiply
    21,684.79x = 32,343.96 × 21,028.51
  4. Step 4: Simplify right side
    21,684.79x = 680,145,286.30
  5. Step 5: Solve for x
    x = 680,145,286.30/21,684.79
  6. Step 6: Final answer
    x = 31,365.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.