Home / 21,975.48-30,326.20-11,903.92

Finding the Fourth Proportional to 21,975.48, 30,326.20 and 11,903.92

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Solution

The fourth proportional to 21,975.48, 30,326.20 and 11,903.92 is: 16,427.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.48 : 30,326.20 = 11,903.92 : x
  2. Step 2: Convert to fraction form
    21,975.48/30,326.20 = 11,903.92/x
  3. Step 3: Cross multiply
    21,975.48x = 30,326.20 × 11,903.92
  4. Step 4: Simplify right side
    21,975.48x = 361,000,658.70
  5. Step 5: Solve for x
    x = 361,000,658.70/21,975.48
  6. Step 6: Final answer
    x = 16,427.43

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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.