Home / 20,535.54-28,338.91-11,583.12

Finding the Fourth Proportional to 20,535.54, 28,338.91 and 11,583.12

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Solution

The fourth proportional to 20,535.54, 28,338.91 and 11,583.12 is: 15,984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.54 : 28,338.91 = 11,583.12 : x
  2. Step 2: Convert to fraction form
    20,535.54/28,338.91 = 11,583.12/x
  3. Step 3: Cross multiply
    20,535.54x = 28,338.91 × 11,583.12
  4. Step 4: Simplify right side
    20,535.54x = 328,252,995.20
  5. Step 5: Solve for x
    x = 328,252,995.20/20,535.54
  6. Step 6: Final answer
    x = 15,984.63

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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.