Home / 20,370.04-28,112.04-11,418.16

Finding the Fourth Proportional to 20,370.04, 28,112.04 and 11,418.16

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Solution

The fourth proportional to 20,370.04, 28,112.04 and 11,418.16 is: 15,757.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.04 : 28,112.04 = 11,418.16 : x
  2. Step 2: Convert to fraction form
    20,370.04/28,112.04 = 11,418.16/x
  3. Step 3: Cross multiply
    20,370.04x = 28,112.04 × 11,418.16
  4. Step 4: Simplify right side
    20,370.04x = 320,987,770.65
  5. Step 5: Solve for x
    x = 320,987,770.65/20,370.04
  6. Step 6: Final answer
    x = 15,757.84

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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.