Home / 30,419.79-41,975.16-16,989.33

Finding the Fourth Proportional to 30,419.79, 41,975.16 and 16,989.33

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Solution

The fourth proportional to 30,419.79, 41,975.16 and 16,989.33 is: 23,442.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,419.79 : 41,975.16 = 16,989.33 : x
  2. Step 2: Convert to fraction form
    30,419.79/41,975.16 = 16,989.33/x
  3. Step 3: Cross multiply
    30,419.79x = 41,975.16 × 16,989.33
  4. Step 4: Simplify right side
    30,419.79x = 713,129,845.04
  5. Step 5: Solve for x
    x = 713,129,845.04/30,419.79
  6. Step 6: Final answer
    x = 23,442.96

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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.