Home / 20,935.08-28,889.73-11,503.04

Finding the Fourth Proportional to 20,935.08, 28,889.73 and 11,503.04

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Solution

The fourth proportional to 20,935.08, 28,889.73 and 11,503.04 is: 15,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.08 : 28,889.73 = 11,503.04 : x
  2. Step 2: Convert to fraction form
    20,935.08/28,889.73 = 11,503.04/x
  3. Step 3: Cross multiply
    20,935.08x = 28,889.73 × 11,503.04
  4. Step 4: Simplify right side
    20,935.08x = 332,319,575.33
  5. Step 5: Solve for x
    x = 332,319,575.33/20,935.08
  6. Step 6: Final answer
    x = 15,873.81

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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.