Home / 31,484.57-43,434.64-21,272.30

Finding the Fourth Proportional to 31,484.57, 43,434.64 and 21,272.30

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Solution

The fourth proportional to 31,484.57, 43,434.64 and 21,272.30 is: 29,346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,484.57 : 43,434.64 = 21,272.30 : x
  2. Step 2: Convert to fraction form
    31,484.57/43,434.64 = 21,272.30/x
  3. Step 3: Cross multiply
    31,484.57x = 43,434.64 × 21,272.30
  4. Step 4: Simplify right side
    31,484.57x = 923,954,745.65
  5. Step 5: Solve for x
    x = 923,954,745.65/31,484.57
  6. Step 6: Final answer
    x = 29,346.28

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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.