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Finding the Fourth Proportional to 18,045,935.20, 27,068,902.80 and 13,794,407.20

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Solution

The fourth proportional to 18,045,935.20, 27,068,902.80 and 13,794,407.20 is: 20,691,610.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,045,935.20 : 27,068,902.80 = 13,794,407.20 : x
  2. Step 2: Convert to fraction form
    18,045,935.20/27,068,902.80 = 13,794,407.20/x
  3. Step 3: Cross multiply
    18,045,935.20x = 27,068,902.80 × 13,794,407.20
  4. Step 4: Simplify right side
    18,045,935.20x = 373,399,467,680,420.12
  5. Step 5: Solve for x
    x = 373,399,467,680,420.12/18,045,935.20
  6. Step 6: Final answer
    x = 20,691,610.80

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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.