Home / 12,686,916.40-17,507,961.68-6,885,698.22

Finding the Fourth Proportional to 12,686,916.40, 17,507,961.68 and 6,885,698.22

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Solution

The fourth proportional to 12,686,916.40, 17,507,961.68 and 6,885,698.22 is: 9,502,272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686,916.40 : 17,507,961.68 = 6,885,698.22 : x
  2. Step 2: Convert to fraction form
    12,686,916.40/17,507,961.68 = 6,885,698.22/x
  3. Step 3: Cross multiply
    12,686,916.40x = 17,507,961.68 × 6,885,698.22
  4. Step 4: Simplify right side
    12,686,916.40x = 120,554,540,541,375.72
  5. Step 5: Solve for x
    x = 120,554,540,541,375.72/12,686,916.40
  6. Step 6: Final answer
    x = 9,502,272.80

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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.