Home / 21,973.88-30,326.40-12,542.45

Finding the Fourth Proportional to 21,973.88, 30,326.40 and 12,542.45

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Solution

The fourth proportional to 21,973.88, 30,326.40 and 12,542.45 is: 17,309.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,973.88 : 30,326.40 = 12,542.45 : x
  2. Step 2: Convert to fraction form
    21,973.88/30,326.40 = 12,542.45/x
  3. Step 3: Cross multiply
    21,973.88x = 30,326.40 × 12,542.45
  4. Step 4: Simplify right side
    21,973.88x = 380,367,204.05
  5. Step 5: Solve for x
    x = 380,367,204.05/21,973.88
  6. Step 6: Final answer
    x = 17,309.97

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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.