Home / 31,485.36-43,444.08-18,910.32

Finding the Fourth Proportional to 31,485.36, 43,444.08 and 18,910.32

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Solution

The fourth proportional to 31,485.36, 43,444.08 and 18,910.32 is: 26,092.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,485.36 : 43,444.08 = 18,910.32 : x
  2. Step 2: Convert to fraction form
    31,485.36/43,444.08 = 18,910.32/x
  3. Step 3: Cross multiply
    31,485.36x = 43,444.08 × 18,910.32
  4. Step 4: Simplify right side
    31,485.36x = 821,541,454.91
  5. Step 5: Solve for x
    x = 821,541,454.91/31,485.36
  6. Step 6: Final answer
    x = 26,092.81

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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.