Home / 20,356.35-28,091.61-11,403.93

Finding the Fourth Proportional to 20,356.35, 28,091.61 and 11,403.93

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Solution

The fourth proportional to 20,356.35, 28,091.61 and 11,403.93 is: 15,737.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.35 : 28,091.61 = 11,403.93 : x
  2. Step 2: Convert to fraction form
    20,356.35/28,091.61 = 11,403.93/x
  3. Step 3: Cross multiply
    20,356.35x = 28,091.61 × 11,403.93
  4. Step 4: Simplify right side
    20,356.35x = 320,354,754.03
  5. Step 5: Solve for x
    x = 320,354,754.03/20,356.35
  6. Step 6: Final answer
    x = 15,737.34

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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.