Home / 30,428.88-41,990.94-16,999.80

Finding the Fourth Proportional to 30,428.88, 41,990.94 and 16,999.80

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Solution

The fourth proportional to 30,428.88, 41,990.94 and 16,999.80 is: 23,459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.88 : 41,990.94 = 16,999.80 : x
  2. Step 2: Convert to fraction form
    30,428.88/41,990.94 = 16,999.80/x
  3. Step 3: Cross multiply
    30,428.88x = 41,990.94 × 16,999.80
  4. Step 4: Simplify right side
    30,428.88x = 713,837,581.81
  5. Step 5: Solve for x
    x = 713,837,581.81/30,428.88
  6. Step 6: Final answer
    x = 23,459.21

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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.