Home / 31,203.04-43,046.48-18,620.50

Finding the Fourth Proportional to 31,203.04, 43,046.48 and 18,620.50

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Solution

The fourth proportional to 31,203.04, 43,046.48 and 18,620.50 is: 25,688.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,203.04 : 43,046.48 = 18,620.50 : x
  2. Step 2: Convert to fraction form
    31,203.04/43,046.48 = 18,620.50/x
  3. Step 3: Cross multiply
    31,203.04x = 43,046.48 × 18,620.50
  4. Step 4: Simplify right side
    31,203.04x = 801,546,980.84
  5. Step 5: Solve for x
    x = 801,546,980.84/31,203.04
  6. Step 6: Final answer
    x = 25,688.11

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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.