Home / 12,525.61-17,286.94-7,220.47

Finding the Fourth Proportional to 12,525.61, 17,286.94 and 7,220.47

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Solution

The fourth proportional to 12,525.61, 17,286.94 and 7,220.47 is: 9,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,525.61 : 17,286.94 = 7,220.47 : x
  2. Step 2: Convert to fraction form
    12,525.61/17,286.94 = 7,220.47/x
  3. Step 3: Cross multiply
    12,525.61x = 17,286.94 × 7,220.47
  4. Step 4: Simplify right side
    12,525.61x = 124,819,801.57
  5. Step 5: Solve for x
    x = 124,819,801.57/12,525.61
  6. Step 6: Final answer
    x = 9,965.17

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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.