Home / 20,982.02-28,955.38-11,550.77

Finding the Fourth Proportional to 20,982.02, 28,955.38 and 11,550.77

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Solution

The fourth proportional to 20,982.02, 28,955.38 and 11,550.77 is: 15,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.02 : 28,955.38 = 11,550.77 : x
  2. Step 2: Convert to fraction form
    20,982.02/28,955.38 = 11,550.77/x
  3. Step 3: Cross multiply
    20,982.02x = 28,955.38 × 11,550.77
  4. Step 4: Simplify right side
    20,982.02x = 334,456,760.99
  5. Step 5: Solve for x
    x = 334,456,760.99/20,982.02
  6. Step 6: Final answer
    x = 15,940.16

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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.