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Finding the Fourth Proportional to 18,678,904.20, 28,018,356.30 and 6,562,049.40

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Solution

The fourth proportional to 18,678,904.20, 28,018,356.30 and 6,562,049.40 is: 9,843,074.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,904.20 : 28,018,356.30 = 6,562,049.40 : x
  2. Step 2: Convert to fraction form
    18,678,904.20/28,018,356.30 = 6,562,049.40/x
  3. Step 3: Cross multiply
    18,678,904.20x = 28,018,356.30 × 6,562,049.40
  4. Step 4: Simplify right side
    18,678,904.20x = 183,857,838,147,401.25
  5. Step 5: Solve for x
    x = 183,857,838,147,401.25/18,678,904.20
  6. Step 6: Final answer
    x = 9,843,074.10

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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.