Home / 20,533.80-28,338.30-11,583.48

Finding the Fourth Proportional to 20,533.80, 28,338.30 and 11,583.48

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Solution

The fourth proportional to 20,533.80, 28,338.30 and 11,583.48 is: 15,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.80 : 28,338.30 = 11,583.48 : x
  2. Step 2: Convert to fraction form
    20,533.80/28,338.30 = 11,583.48/x
  3. Step 3: Cross multiply
    20,533.80x = 28,338.30 × 11,583.48
  4. Step 4: Simplify right side
    20,533.80x = 328,256,131.28
  5. Step 5: Solve for x
    x = 328,256,131.28/20,533.80
  6. Step 6: Final answer
    x = 15,986.14

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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.