Home / 31,867.56-43,989.48-21,253.32

Finding the Fourth Proportional to 31,867.56, 43,989.48 and 21,253.32

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Solution

The fourth proportional to 31,867.56, 43,989.48 and 21,253.32 is: 29,337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,867.56 : 43,989.48 = 21,253.32 : x
  2. Step 2: Convert to fraction form
    31,867.56/43,989.48 = 21,253.32/x
  3. Step 3: Cross multiply
    31,867.56x = 43,989.48 × 21,253.32
  4. Step 4: Simplify right side
    31,867.56x = 934,922,495.07
  5. Step 5: Solve for x
    x = 934,922,495.07/31,867.56
  6. Step 6: Final answer
    x = 29,337.75

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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.