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Finding the Fourth Proportional to 18,636.80, 27,922.36 and 9,852.40

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Solution

The fourth proportional to 18,636.80, 27,922.36 and 9,852.40 is: 14,761.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.80 : 27,922.36 = 9,852.40 : x
  2. Step 2: Convert to fraction form
    18,636.80/27,922.36 = 9,852.40/x
  3. Step 3: Cross multiply
    18,636.80x = 27,922.36 × 9,852.40
  4. Step 4: Simplify right side
    18,636.80x = 275,102,259.66
  5. Step 5: Solve for x
    x = 275,102,259.66/18,636.80
  6. Step 6: Final answer
    x = 14,761.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.