Home / 31,215.62-43,069.56-18,468.20

Finding the Fourth Proportional to 31,215.62, 43,069.56 and 18,468.20

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Solution

The fourth proportional to 31,215.62, 43,069.56 and 18,468.20 is: 25,481.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.62 : 43,069.56 = 18,468.20 : x
  2. Step 2: Convert to fraction form
    31,215.62/43,069.56 = 18,468.20/x
  3. Step 3: Cross multiply
    31,215.62x = 43,069.56 × 18,468.20
  4. Step 4: Simplify right side
    31,215.62x = 795,417,247.99
  5. Step 5: Solve for x
    x = 795,417,247.99/31,215.62
  6. Step 6: Final answer
    x = 25,481.39

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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.