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Finding the Fourth Proportional to 14,918.80, 20,588.48 and 8,204.94

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Solution

The fourth proportional to 14,918.80, 20,588.48 and 8,204.94 is: 11,323.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,918.80 : 20,588.48 = 8,204.94 : x
  2. Step 2: Convert to fraction form
    14,918.80/20,588.48 = 8,204.94/x
  3. Step 3: Cross multiply
    14,918.80x = 20,588.48 × 8,204.94
  4. Step 4: Simplify right side
    14,918.80x = 168,927,243.09
  5. Step 5: Solve for x
    x = 168,927,243.09/14,918.80
  6. Step 6: Final answer
    x = 11,323.11

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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.