Home / 31,276.59-43,145.55-21,201.63

Finding the Fourth Proportional to 31,276.59, 43,145.55 and 21,201.63

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Solution

The fourth proportional to 31,276.59, 43,145.55 and 21,201.63 is: 29,247.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,276.59 : 43,145.55 = 21,201.63 : x
  2. Step 2: Convert to fraction form
    31,276.59/43,145.55 = 21,201.63/x
  3. Step 3: Cross multiply
    31,276.59x = 43,145.55 × 21,201.63
  4. Step 4: Simplify right side
    31,276.59x = 914,755,987.25
  5. Step 5: Solve for x
    x = 914,755,987.25/31,276.59
  6. Step 6: Final answer
    x = 29,247.31

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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.