Home / 20,697.41-28,561.65-11,265.77

Finding the Fourth Proportional to 20,697.41, 28,561.65 and 11,265.77

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Solution

The fourth proportional to 20,697.41, 28,561.65 and 11,265.77 is: 15,546.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.41 : 28,561.65 = 11,265.77 : x
  2. Step 2: Convert to fraction form
    20,697.41/28,561.65 = 11,265.77/x
  3. Step 3: Cross multiply
    20,697.41x = 28,561.65 × 11,265.77
  4. Step 4: Simplify right side
    20,697.41x = 321,768,836.91
  5. Step 5: Solve for x
    x = 321,768,836.91/20,697.41
  6. Step 6: Final answer
    x = 15,546.34

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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.