Home / 20,595.14-28,421.03-11,163.50

Finding the Fourth Proportional to 20,595.14, 28,421.03 and 11,163.50

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Solution

The fourth proportional to 20,595.14, 28,421.03 and 11,163.50 is: 15,405.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.14 : 28,421.03 = 11,163.50 : x
  2. Step 2: Convert to fraction form
    20,595.14/28,421.03 = 11,163.50/x
  3. Step 3: Cross multiply
    20,595.14x = 28,421.03 × 11,163.50
  4. Step 4: Simplify right side
    20,595.14x = 317,278,054.21
  5. Step 5: Solve for x
    x = 317,278,054.21/20,595.14
  6. Step 6: Final answer
    x = 15,405.49

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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.