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Finding the Fourth Proportional to 18,145,819.20, 27,218,145.60 and 6,015,842.40

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Solution

The fourth proportional to 18,145,819.20, 27,218,145.60 and 6,015,842.40 is: 9,023,570.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145,819.20 : 27,218,145.60 = 6,015,842.40 : x
  2. Step 2: Convert to fraction form
    18,145,819.20/27,218,145.60 = 6,015,842.40/x
  3. Step 3: Cross multiply
    18,145,819.20x = 27,218,145.60 × 6,015,842.40
  4. Step 4: Simplify right side
    18,145,819.20x = 163,740,074,349,853.47
  5. Step 5: Solve for x
    x = 163,740,074,349,853.47/18,145,819.20
  6. Step 6: Final answer
    x = 9,023,570.25

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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.