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Finding the Fourth Proportional to 17,752.80, 26,629.20 and 11,877.60

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Solution

The fourth proportional to 17,752.80, 26,629.20 and 11,877.60 is: 17,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,752.80 : 26,629.20 = 11,877.60 : x
  2. Step 2: Convert to fraction form
    17,752.80/26,629.20 = 11,877.60/x
  3. Step 3: Cross multiply
    17,752.80x = 26,629.20 × 11,877.60
  4. Step 4: Simplify right side
    17,752.80x = 316,290,985.92
  5. Step 5: Solve for x
    x = 316,290,985.92/17,752.80
  6. Step 6: Final answer
    x = 17,816.40

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Similar ratio
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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.