Home / 31,645.62-43,671.05-18,216.63

Finding the Fourth Proportional to 31,645.62, 43,671.05 and 18,216.63

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Solution

The fourth proportional to 31,645.62, 43,671.05 and 18,216.63 is: 25,139.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,645.62 : 43,671.05 = 18,216.63 : x
  2. Step 2: Convert to fraction form
    31,645.62/43,671.05 = 18,216.63/x
  3. Step 3: Cross multiply
    31,645.62x = 43,671.05 × 18,216.63
  4. Step 4: Simplify right side
    31,645.62x = 795,539,336.79
  5. Step 5: Solve for x
    x = 795,539,336.79/31,645.62
  6. Step 6: Final answer
    x = 25,139.00

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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.