Home / 32,920.96-45,424-21,736.32

Finding the Fourth Proportional to 32,920.96, 45,424 and 21,736.32

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Solution

The fourth proportional to 32,920.96, 45,424 and 21,736.32 is: 29,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,920.96 : 45,424 = 21,736.32 : x
  2. Step 2: Convert to fraction form
    32,920.96/45,424 = 21,736.32/x
  3. Step 3: Cross multiply
    32,920.96x = 45,424 × 21,736.32
  4. Step 4: Simplify right side
    32,920.96x = 987,350,599.68
  5. Step 5: Solve for x
    x = 987,350,599.68/32,920.96
  6. Step 6: Final answer
    x = 29,991.55

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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.