Home / 12,285.36-16,952.31-6,978.69

Finding the Fourth Proportional to 12,285.36, 16,952.31 and 6,978.69

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Solution

The fourth proportional to 12,285.36, 16,952.31 and 6,978.69 is: 9,629.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.36 : 16,952.31 = 6,978.69 : x
  2. Step 2: Convert to fraction form
    12,285.36/16,952.31 = 6,978.69/x
  3. Step 3: Cross multiply
    12,285.36x = 16,952.31 × 6,978.69
  4. Step 4: Simplify right side
    12,285.36x = 118,304,916.27
  5. Step 5: Solve for x
    x = 118,304,916.27/12,285.36
  6. Step 6: Final answer
    x = 9,629.75

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1.5x scale

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.