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Finding the Fourth Proportional to 18,679,295.70, 28,018,943.55 and 6,562,440.90

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Solution

The fourth proportional to 18,679,295.70, 28,018,943.55 and 6,562,440.90 is: 9,843,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,679,295.70 : 28,018,943.55 = 6,562,440.90 : x
  2. Step 2: Convert to fraction form
    18,679,295.70/28,018,943.55 = 6,562,440.90/x
  3. Step 3: Cross multiply
    18,679,295.70x = 28,018,943.55 × 6,562,440.90
  4. Step 4: Simplify right side
    18,679,295.70x = 183,872,661,127,311.22
  5. Step 5: Solve for x
    x = 183,872,661,127,311.22/18,679,295.70
  6. Step 6: Final answer
    x = 9,843,661.35

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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.