Home / 30,428.32-41,991.96-16,999.12

Finding the Fourth Proportional to 30,428.32, 41,991.96 and 16,999.12

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Solution

The fourth proportional to 30,428.32, 41,991.96 and 16,999.12 is: 23,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.32 : 41,991.96 = 16,999.12 : x
  2. Step 2: Convert to fraction form
    30,428.32/41,991.96 = 16,999.12/x
  3. Step 3: Cross multiply
    30,428.32x = 41,991.96 × 16,999.12
  4. Step 4: Simplify right side
    30,428.32x = 713,826,367.08
  5. Step 5: Solve for x
    x = 713,826,367.08/30,428.32
  6. Step 6: Final answer
    x = 23,459.28

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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.