Home / 31,266.64-43,141.96-21,203.28

Finding the Fourth Proportional to 31,266.64, 43,141.96 and 21,203.28

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Solution

The fourth proportional to 31,266.64, 43,141.96 and 21,203.28 is: 29,256.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,266.64 : 43,141.96 = 21,203.28 : x
  2. Step 2: Convert to fraction form
    31,266.64/43,141.96 = 21,203.28/x
  3. Step 3: Cross multiply
    31,266.64x = 43,141.96 × 21,203.28
  4. Step 4: Simplify right side
    31,266.64x = 914,751,057.63
  5. Step 5: Solve for x
    x = 914,751,057.63/31,266.64
  6. Step 6: Final answer
    x = 29,256.46

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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.