Home / 20,808.06-28,712.26-11,853.84

Finding the Fourth Proportional to 20,808.06, 28,712.26 and 11,853.84

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Solution

The fourth proportional to 20,808.06, 28,712.26 and 11,853.84 is: 16,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.06 : 28,712.26 = 11,853.84 : x
  2. Step 2: Convert to fraction form
    20,808.06/28,712.26 = 11,853.84/x
  3. Step 3: Cross multiply
    20,808.06x = 28,712.26 × 11,853.84
  4. Step 4: Simplify right side
    20,808.06x = 340,350,536.08
  5. Step 5: Solve for x
    x = 340,350,536.08/20,808.06
  6. Step 6: Final answer
    x = 16,356.67

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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.