Home / 20,833.88-28,751.36-11,403.05

Finding the Fourth Proportional to 20,833.88, 28,751.36 and 11,403.05

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Solution

The fourth proportional to 20,833.88, 28,751.36 and 11,403.05 is: 15,736.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.88 : 28,751.36 = 11,403.05 : x
  2. Step 2: Convert to fraction form
    20,833.88/28,751.36 = 11,403.05/x
  3. Step 3: Cross multiply
    20,833.88x = 28,751.36 × 11,403.05
  4. Step 4: Simplify right side
    20,833.88x = 327,852,994.88
  5. Step 5: Solve for x
    x = 327,852,994.88/20,833.88
  6. Step 6: Final answer
    x = 15,736.53

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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.