Home / 12,899.26-19,347.78-9,135.48

Finding the Fourth Proportional to 12,899.26, 19,347.78 and 9,135.48

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Solution

The fourth proportional to 12,899.26, 19,347.78 and 9,135.48 is: 13,702.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.26 : 19,347.78 = 9,135.48 : x
  2. Step 2: Convert to fraction form
    12,899.26/19,347.78 = 9,135.48/x
  3. Step 3: Cross multiply
    12,899.26x = 19,347.78 × 9,135.48
  4. Step 4: Simplify right side
    12,899.26x = 176,751,257.23
  5. Step 5: Solve for x
    x = 176,751,257.23/12,899.26
  6. Step 6: Final answer
    x = 13,702.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.