Home / 12,628.68-17,429.25-7,322.40

Finding the Fourth Proportional to 12,628.68, 17,429.25 and 7,322.40

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Solution

The fourth proportional to 12,628.68, 17,429.25 and 7,322.40 is: 10,105.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.68 : 17,429.25 = 7,322.40 : x
  2. Step 2: Convert to fraction form
    12,628.68/17,429.25 = 7,322.40/x
  3. Step 3: Cross multiply
    12,628.68x = 17,429.25 × 7,322.40
  4. Step 4: Simplify right side
    12,628.68x = 127,623,940.20
  5. Step 5: Solve for x
    x = 127,623,940.20/12,628.68
  6. Step 6: Final answer
    x = 10,105.88

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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.