Home / 33,318.72-45,975.39-21,398.19

Finding the Fourth Proportional to 33,318.72, 45,975.39 and 21,398.19

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Solution

The fourth proportional to 33,318.72, 45,975.39 and 21,398.19 is: 29,526.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,318.72 : 45,975.39 = 21,398.19 : x
  2. Step 2: Convert to fraction form
    33,318.72/45,975.39 = 21,398.19/x
  3. Step 3: Cross multiply
    33,318.72x = 45,975.39 × 21,398.19
  4. Step 4: Simplify right side
    33,318.72x = 983,790,130.54
  5. Step 5: Solve for x
    x = 983,790,130.54/33,318.72
  6. Step 6: Final answer
    x = 29,526.65

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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.