Home / 30,428.54-41,991.28-16,816.21

Finding the Fourth Proportional to 30,428.54, 41,991.28 and 16,816.21

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Solution

The fourth proportional to 30,428.54, 41,991.28 and 16,816.21 is: 23,206.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.54 : 41,991.28 = 16,816.21 : x
  2. Step 2: Convert to fraction form
    30,428.54/41,991.28 = 16,816.21/x
  3. Step 3: Cross multiply
    30,428.54x = 41,991.28 × 16,816.21
  4. Step 4: Simplify right side
    30,428.54x = 706,134,130.22
  5. Step 5: Solve for x
    x = 706,134,130.22/30,428.54
  6. Step 6: Final answer
    x = 23,206.31

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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.