Home / 18,907.86-26,076.42-12,191.34

Finding the Fourth Proportional to 18,907.86, 26,076.42 and 12,191.34

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Solution

The fourth proportional to 18,907.86, 26,076.42 and 12,191.34 is: 16,813.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.86 : 26,076.42 = 12,191.34 : x
  2. Step 2: Convert to fraction form
    18,907.86/26,076.42 = 12,191.34/x
  3. Step 3: Cross multiply
    18,907.86x = 26,076.42 × 12,191.34
  4. Step 4: Simplify right side
    18,907.86x = 317,906,502.20
  5. Step 5: Solve for x
    x = 317,906,502.20/18,907.86
  6. Step 6: Final answer
    x = 16,813.46

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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.