Home / 20,595.03-28,420.38-11,163.39

Finding the Fourth Proportional to 20,595.03, 28,420.38 and 11,163.39

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Solution

The fourth proportional to 20,595.03, 28,420.38 and 11,163.39 is: 15,405.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.03 : 28,420.38 = 11,163.39 : x
  2. Step 2: Convert to fraction form
    20,595.03/28,420.38 = 11,163.39/x
  3. Step 3: Cross multiply
    20,595.03x = 28,420.38 × 11,163.39
  4. Step 4: Simplify right side
    20,595.03x = 317,267,785.89
  5. Step 5: Solve for x
    x = 317,267,785.89/20,595.03
  6. Step 6: Final answer
    x = 15,405.07

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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.