Home / 20,157.86-30,212.19-11,374.63

Finding the Fourth Proportional to 20,157.86, 30,212.19 and 11,374.63

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Solution

The fourth proportional to 20,157.86, 30,212.19 and 11,374.63 is: 17,048.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.86 : 30,212.19 = 11,374.63 : x
  2. Step 2: Convert to fraction form
    20,157.86/30,212.19 = 11,374.63/x
  3. Step 3: Cross multiply
    20,157.86x = 30,212.19 × 11,374.63
  4. Step 4: Simplify right side
    20,157.86x = 343,652,407.21
  5. Step 5: Solve for x
    x = 343,652,407.21/20,157.86
  6. Step 6: Final answer
    x = 17,048.06

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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.