Home / 20,995.03-28,972.88-11,563.39

Finding the Fourth Proportional to 20,995.03, 28,972.88 and 11,563.39

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Solution

The fourth proportional to 20,995.03, 28,972.88 and 11,563.39 is: 15,957.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.03 : 28,972.88 = 11,563.39 : x
  2. Step 2: Convert to fraction form
    20,995.03/28,972.88 = 11,563.39/x
  3. Step 3: Cross multiply
    20,995.03x = 28,972.88 × 11,563.39
  4. Step 4: Simplify right side
    20,995.03x = 335,024,566.00
  5. Step 5: Solve for x
    x = 335,024,566.00/20,995.03
  6. Step 6: Final answer
    x = 15,957.33

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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.