Home / 20,442.10-28,210.34-12,375.64

Finding the Fourth Proportional to 20,442.10, 28,210.34 and 12,375.64

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Solution

The fourth proportional to 20,442.10, 28,210.34 and 12,375.64 is: 17,078.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.10 : 28,210.34 = 12,375.64 : x
  2. Step 2: Convert to fraction form
    20,442.10/28,210.34 = 12,375.64/x
  3. Step 3: Cross multiply
    20,442.10x = 28,210.34 × 12,375.64
  4. Step 4: Simplify right side
    20,442.10x = 349,121,012.12
  5. Step 5: Solve for x
    x = 349,121,012.12/20,442.10
  6. Step 6: Final answer
    x = 17,078.53

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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.