Home / 13,442.12-20,112.48-12,077.92

Finding the Fourth Proportional to 13,442.12, 20,112.48 and 12,077.92

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Solution

The fourth proportional to 13,442.12, 20,112.48 and 12,077.92 is: 18,071.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.12 : 20,112.48 = 12,077.92 : x
  2. Step 2: Convert to fraction form
    13,442.12/20,112.48 = 12,077.92/x
  3. Step 3: Cross multiply
    13,442.12x = 20,112.48 × 12,077.92
  4. Step 4: Simplify right side
    13,442.12x = 242,916,924.44
  5. Step 5: Solve for x
    x = 242,916,924.44/13,442.12
  6. Step 6: Final answer
    x = 18,071.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.