Home / 26,820.30-40,259.88-21,309.06

Finding the Fourth Proportional to 26,820.30, 40,259.88 and 21,309.06

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Solution

The fourth proportional to 26,820.30, 40,259.88 and 21,309.06 is: 31,986.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,820.30 : 40,259.88 = 21,309.06 : x
  2. Step 2: Convert to fraction form
    26,820.30/40,259.88 = 21,309.06/x
  3. Step 3: Cross multiply
    26,820.30x = 40,259.88 × 21,309.06
  4. Step 4: Simplify right side
    26,820.30x = 857,900,198.51
  5. Step 5: Solve for x
    x = 857,900,198.51/26,820.30
  6. Step 6: Final answer
    x = 31,986.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.