Home / 15,421.94-21,282.26-8,348.36

Finding the Fourth Proportional to 15,421.94, 21,282.26 and 8,348.36

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Solution

The fourth proportional to 15,421.94, 21,282.26 and 8,348.36 is: 11,520.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,421.94 : 21,282.26 = 8,348.36 : x
  2. Step 2: Convert to fraction form
    15,421.94/21,282.26 = 8,348.36/x
  3. Step 3: Cross multiply
    15,421.94x = 21,282.26 × 8,348.36
  4. Step 4: Simplify right side
    15,421.94x = 177,671,968.09
  5. Step 5: Solve for x
    x = 177,671,968.09/15,421.94
  6. Step 6: Final answer
    x = 11,520.73

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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.