Home / 30,428.52-41,991.16-16,999.67

Finding the Fourth Proportional to 30,428.52, 41,991.16 and 16,999.67

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Solution

The fourth proportional to 30,428.52, 41,991.16 and 16,999.67 is: 23,459.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.52 : 41,991.16 = 16,999.67 : x
  2. Step 2: Convert to fraction form
    30,428.52/41,991.16 = 16,999.67/x
  3. Step 3: Cross multiply
    30,428.52x = 41,991.16 × 16,999.67
  4. Step 4: Simplify right side
    30,428.52x = 713,835,862.92
  5. Step 5: Solve for x
    x = 713,835,862.92/30,428.52
  6. Step 6: Final answer
    x = 23,459.43

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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.