Home / 21,878.97-30,196.63-16,564.56

Finding the Fourth Proportional to 21,878.97, 30,196.63 and 16,564.56

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Solution

The fourth proportional to 21,878.97, 30,196.63 and 16,564.56 is: 22,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.97 : 30,196.63 = 16,564.56 : x
  2. Step 2: Convert to fraction form
    21,878.97/30,196.63 = 16,564.56/x
  3. Step 3: Cross multiply
    21,878.97x = 30,196.63 × 16,564.56
  4. Step 4: Simplify right side
    21,878.97x = 500,193,806.61
  5. Step 5: Solve for x
    x = 500,193,806.61/21,878.97
  6. Step 6: Final answer
    x = 22,861.85

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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.