Home / 12,909.38-17,813.90-7,243.36

Finding the Fourth Proportional to 12,909.38, 17,813.90 and 7,243.36

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Solution

The fourth proportional to 12,909.38, 17,813.90 and 7,243.36 is: 9,995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.38 : 17,813.90 = 7,243.36 : x
  2. Step 2: Convert to fraction form
    12,909.38/17,813.90 = 7,243.36/x
  3. Step 3: Cross multiply
    12,909.38x = 17,813.90 × 7,243.36
  4. Step 4: Simplify right side
    12,909.38x = 129,032,464.28
  5. Step 5: Solve for x
    x = 129,032,464.28/12,909.38
  6. Step 6: Final answer
    x = 9,995.25

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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.