Home / 20,631.22-28,468.74-11,556.93

Finding the Fourth Proportional to 20,631.22, 28,468.74 and 11,556.93

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Solution

The fourth proportional to 20,631.22, 28,468.74 and 11,556.93 is: 15,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.22 : 28,468.74 = 11,556.93 : x
  2. Step 2: Convert to fraction form
    20,631.22/28,468.74 = 11,556.93/x
  3. Step 3: Cross multiply
    20,631.22x = 28,468.74 × 11,556.93
  4. Step 4: Simplify right side
    20,631.22x = 329,011,235.37
  5. Step 5: Solve for x
    x = 329,011,235.37/20,631.22
  6. Step 6: Final answer
    x = 15,947.25

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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.