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Finding the Fourth Proportional to 18,116.80, 27,164.40 and 9,368.80

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Solution

The fourth proportional to 18,116.80, 27,164.40 and 9,368.80 is: 14,047.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116.80 : 27,164.40 = 9,368.80 : x
  2. Step 2: Convert to fraction form
    18,116.80/27,164.40 = 9,368.80/x
  3. Step 3: Cross multiply
    18,116.80x = 27,164.40 × 9,368.80
  4. Step 4: Simplify right side
    18,116.80x = 254,497,830.72
  5. Step 5: Solve for x
    x = 254,497,830.72/18,116.80
  6. Step 6: Final answer
    x = 14,047.61

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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.