Home / 20,481.01-28,265.92-12,528.53

Finding the Fourth Proportional to 20,481.01, 28,265.92 and 12,528.53

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Solution

The fourth proportional to 20,481.01, 28,265.92 and 12,528.53 is: 17,290.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.01 : 28,265.92 = 12,528.53 : x
  2. Step 2: Convert to fraction form
    20,481.01/28,265.92 = 12,528.53/x
  3. Step 3: Cross multiply
    20,481.01x = 28,265.92 × 12,528.53
  4. Step 4: Simplify right side
    20,481.01x = 354,130,254.05
  5. Step 5: Solve for x
    x = 354,130,254.05/20,481.01
  6. Step 6: Final answer
    x = 17,290.67

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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.