Home / 30,150.76-45,236.94-10,431.28

Finding the Fourth Proportional to 30,150.76, 45,236.94 and 10,431.28

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Solution

The fourth proportional to 30,150.76, 45,236.94 and 10,431.28 is: 15,650.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,150.76 : 45,236.94 = 10,431.28 : x
  2. Step 2: Convert to fraction form
    30,150.76/45,236.94 = 10,431.28/x
  3. Step 3: Cross multiply
    30,150.76x = 45,236.94 × 10,431.28
  4. Step 4: Simplify right side
    30,150.76x = 471,879,187.48
  5. Step 5: Solve for x
    x = 471,879,187.48/30,150.76
  6. Step 6: Final answer
    x = 15,650.66

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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.