Home / 20,129.45-30,148.18-9,606.86

Finding the Fourth Proportional to 20,129.45, 30,148.18 and 9,606.86

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Solution

The fourth proportional to 20,129.45, 30,148.18 and 9,606.86 is: 14,388.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.45 : 30,148.18 = 9,606.86 : x
  2. Step 2: Convert to fraction form
    20,129.45/30,148.18 = 9,606.86/x
  3. Step 3: Cross multiply
    20,129.45x = 30,148.18 × 9,606.86
  4. Step 4: Simplify right side
    20,129.45x = 289,629,344.51
  5. Step 5: Solve for x
    x = 289,629,344.51/20,129.45
  6. Step 6: Final answer
    x = 14,388.34

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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.