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Finding the Fourth Proportional to 12,822,518.16, 19,237,373.04 and 5,151,549.65

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Solution

The fourth proportional to 12,822,518.16, 19,237,373.04 and 5,151,549.65 is: 7,728,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,822,518.16 : 19,237,373.04 = 5,151,549.65 : x
  2. Step 2: Convert to fraction form
    12,822,518.16/19,237,373.04 = 5,151,549.65/x
  3. Step 3: Cross multiply
    12,822,518.16x = 19,237,373.04 × 5,151,549.65
  4. Step 4: Simplify right side
    12,822,518.16x = 99,102,282,317,425.56
  5. Step 5: Solve for x
    x = 99,102,282,317,425.56/12,822,518.16
  6. Step 6: Final answer
    x = 7,728,769.11

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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.