Home / 21,888.43-30,163.89-15,910.63

Finding the Fourth Proportional to 21,888.43, 30,163.89 and 15,910.63

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Solution

The fourth proportional to 21,888.43, 30,163.89 and 15,910.63 is: 21,926.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.43 : 30,163.89 = 15,910.63 : x
  2. Step 2: Convert to fraction form
    21,888.43/30,163.89 = 15,910.63/x
  3. Step 3: Cross multiply
    21,888.43x = 30,163.89 × 15,910.63
  4. Step 4: Simplify right side
    21,888.43x = 479,926,477.41
  5. Step 5: Solve for x
    x = 479,926,477.41/21,888.43
  6. Step 6: Final answer
    x = 21,926.04

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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.