Home / 12,186,548.78-16,789,172.90-8,509,641.36

Finding the Fourth Proportional to 12,186,548.78, 16,789,172.90 and 8,509,641.36

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Solution

The fourth proportional to 12,186,548.78, 16,789,172.90 and 8,509,641.36 is: 11,723,568.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186,548.78 : 16,789,172.90 = 8,509,641.36 : x
  2. Step 2: Convert to fraction form
    12,186,548.78/16,789,172.90 = 8,509,641.36/x
  3. Step 3: Cross multiply
    12,186,548.78x = 16,789,172.90 × 8,509,641.36
  4. Step 4: Simplify right side
    12,186,548.78x = 142,869,840,110,031.12
  5. Step 5: Solve for x
    x = 142,869,840,110,031.12/12,186,548.78
  6. Step 6: Final answer
    x = 11,723,568.56

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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.