Home / 12,936,728.78-17,852,769.91-7,135,667.18

Finding the Fourth Proportional to 12,936,728.78, 17,852,769.91 and 7,135,667.18

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Solution

The fourth proportional to 12,936,728.78, 17,852,769.91 and 7,135,667.18 is: 9,847,267.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936,728.78 : 17,852,769.91 = 7,135,667.18 : x
  2. Step 2: Convert to fraction form
    12,936,728.78/17,852,769.91 = 7,135,667.18/x
  3. Step 3: Cross multiply
    12,936,728.78x = 17,852,769.91 × 7,135,667.18
  4. Step 4: Simplify right side
    12,936,728.78x = 127,391,424,318,878.55
  5. Step 5: Solve for x
    x = 127,391,424,318,878.55/12,936,728.78
  6. Step 6: Final answer
    x = 9,847,267.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.