Home / 20,520.48-28,325.28-12,025.32

Finding the Fourth Proportional to 20,520.48, 28,325.28 and 12,025.32

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Solution

The fourth proportional to 20,520.48, 28,325.28 and 12,025.32 is: 16,599.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.48 : 28,325.28 = 12,025.32 : x
  2. Step 2: Convert to fraction form
    20,520.48/28,325.28 = 12,025.32/x
  3. Step 3: Cross multiply
    20,520.48x = 28,325.28 × 12,025.32
  4. Step 4: Simplify right side
    20,520.48x = 340,620,556.09
  5. Step 5: Solve for x
    x = 340,620,556.09/20,520.48
  6. Step 6: Final answer
    x = 16,599.05

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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.