Home / 20,837.67-31,268.66-12,533.55

Finding the Fourth Proportional to 20,837.67, 31,268.66 and 12,533.55

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Solution

The fourth proportional to 20,837.67, 31,268.66 and 12,533.55 is: 18,807.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.67 : 31,268.66 = 12,533.55 : x
  2. Step 2: Convert to fraction form
    20,837.67/31,268.66 = 12,533.55/x
  3. Step 3: Cross multiply
    20,837.67x = 31,268.66 × 12,533.55
  4. Step 4: Simplify right side
    20,837.67x = 391,907,250.88
  5. Step 5: Solve for x
    x = 391,907,250.88/20,837.67
  6. Step 6: Final answer
    x = 18,807.63

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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.