Home / 31,458.08-43,130.80-30,896.48

Finding the Fourth Proportional to 31,458.08, 43,130.80 and 30,896.48

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Solution

The fourth proportional to 31,458.08, 43,130.80 and 30,896.48 is: 42,360.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,458.08 : 43,130.80 = 30,896.48 : x
  2. Step 2: Convert to fraction form
    31,458.08/43,130.80 = 30,896.48/x
  3. Step 3: Cross multiply
    31,458.08x = 43,130.80 × 30,896.48
  4. Step 4: Simplify right side
    31,458.08x = 1,332,589,899.58
  5. Step 5: Solve for x
    x = 1,332,589,899.58/31,458.08
  6. Step 6: Final answer
    x = 42,360.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.