Home / 20,883.56-28,820.63-11,452.13

Finding the Fourth Proportional to 20,883.56, 28,820.63 and 11,452.13

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Solution

The fourth proportional to 20,883.56, 28,820.63 and 11,452.13 is: 15,804.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.56 : 28,820.63 = 11,452.13 : x
  2. Step 2: Convert to fraction form
    20,883.56/28,820.63 = 11,452.13/x
  3. Step 3: Cross multiply
    20,883.56x = 28,820.63 × 11,452.13
  4. Step 4: Simplify right side
    20,883.56x = 330,057,400.08
  5. Step 5: Solve for x
    x = 330,057,400.08/20,883.56
  6. Step 6: Final answer
    x = 15,804.65

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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.