Home / 21,203.88-31,958.22-18,277.64

Finding the Fourth Proportional to 21,203.88, 31,958.22 and 18,277.64

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Solution

The fourth proportional to 21,203.88, 31,958.22 and 18,277.64 is: 27,547.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.88 : 31,958.22 = 18,277.64 : x
  2. Step 2: Convert to fraction form
    21,203.88/31,958.22 = 18,277.64/x
  3. Step 3: Cross multiply
    21,203.88x = 31,958.22 × 18,277.64
  4. Step 4: Simplify right side
    21,203.88x = 584,120,680.41
  5. Step 5: Solve for x
    x = 584,120,680.41/21,203.88
  6. Step 6: Final answer
    x = 27,547.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.