Home / 12,625.40-17,429.73-9,786.39

Finding the Fourth Proportional to 12,625.40, 17,429.73 and 9,786.39

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Solution

The fourth proportional to 12,625.40, 17,429.73 and 9,786.39 is: 13,510.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,625.40 : 17,429.73 = 9,786.39 : x
  2. Step 2: Convert to fraction form
    12,625.40/17,429.73 = 9,786.39/x
  3. Step 3: Cross multiply
    12,625.40x = 17,429.73 × 9,786.39
  4. Step 4: Simplify right side
    12,625.40x = 170,574,135.37
  5. Step 5: Solve for x
    x = 170,574,135.37/12,625.40
  6. Step 6: Final answer
    x = 13,510.40

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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.