Home / 20,893.14-31,298.70-12,109.60

Finding the Fourth Proportional to 20,893.14, 31,298.70 and 12,109.60

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Solution

The fourth proportional to 20,893.14, 31,298.70 and 12,109.60 is: 18,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.14 : 31,298.70 = 12,109.60 : x
  2. Step 2: Convert to fraction form
    20,893.14/31,298.70 = 12,109.60/x
  3. Step 3: Cross multiply
    20,893.14x = 31,298.70 × 12,109.60
  4. Step 4: Simplify right side
    20,893.14x = 379,014,822.05
  5. Step 5: Solve for x
    x = 379,014,822.05/20,893.14
  6. Step 6: Final answer
    x = 18,140.63

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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.