Home / 21,985.41-30,339.81-11,914.11

Finding the Fourth Proportional to 21,985.41, 30,339.81 and 11,914.11

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Solution

The fourth proportional to 21,985.41, 30,339.81 and 11,914.11 is: 16,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.41 : 30,339.81 = 11,914.11 : x
  2. Step 2: Convert to fraction form
    21,985.41/30,339.81 = 11,914.11/x
  3. Step 3: Cross multiply
    21,985.41x = 30,339.81 × 11,914.11
  4. Step 4: Simplify right side
    21,985.41x = 361,471,833.72
  5. Step 5: Solve for x
    x = 361,471,833.72/21,985.41
  6. Step 6: Final answer
    x = 16,441.44

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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.