Home / 21,985.54-30,340.00-11,914.25

Finding the Fourth Proportional to 21,985.54, 30,340.00 and 11,914.25

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Solution

The fourth proportional to 21,985.54, 30,340.00 and 11,914.25 is: 16,441.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.54 : 30,340.00 = 11,914.25 : x
  2. Step 2: Convert to fraction form
    21,985.54/30,340.00 = 11,914.25/x
  3. Step 3: Cross multiply
    21,985.54x = 30,340.00 × 11,914.25
  4. Step 4: Simplify right side
    21,985.54x = 361,478,285.43
  5. Step 5: Solve for x
    x = 361,478,285.43/21,985.54
  6. Step 6: Final answer
    x = 16,441.64

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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.