Home / 20,907.42-28,852.38-11,347.32

Finding the Fourth Proportional to 20,907.42, 28,852.38 and 11,347.32

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Solution

The fourth proportional to 20,907.42, 28,852.38 and 11,347.32 is: 15,659.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.42 : 28,852.38 = 11,347.32 : x
  2. Step 2: Convert to fraction form
    20,907.42/28,852.38 = 11,347.32/x
  3. Step 3: Cross multiply
    20,907.42x = 28,852.38 × 11,347.32
  4. Step 4: Simplify right side
    20,907.42x = 327,397,188.62
  5. Step 5: Solve for x
    x = 327,397,188.62/20,907.42
  6. Step 6: Final answer
    x = 15,659.38

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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.