Home / 20,377.70-28,120.83-11,303

Finding the Fourth Proportional to 20,377.70, 28,120.83 and 11,303

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Solution

The fourth proportional to 20,377.70, 28,120.83 and 11,303 is: 15,597.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.70 : 28,120.83 = 11,303 : x
  2. Step 2: Convert to fraction form
    20,377.70/28,120.83 = 11,303/x
  3. Step 3: Cross multiply
    20,377.70x = 28,120.83 × 11,303
  4. Step 4: Simplify right side
    20,377.70x = 317,849,741.49
  5. Step 5: Solve for x
    x = 317,849,741.49/20,377.70
  6. Step 6: Final answer
    x = 15,597.92

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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.