Home / 12,628.48-17,409.04-8,839.88

Finding the Fourth Proportional to 12,628.48, 17,409.04 and 8,839.88

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Solution

The fourth proportional to 12,628.48, 17,409.04 and 8,839.88 is: 12,186.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.48 : 17,409.04 = 8,839.88 : x
  2. Step 2: Convert to fraction form
    12,628.48/17,409.04 = 8,839.88/x
  3. Step 3: Cross multiply
    12,628.48x = 17,409.04 × 8,839.88
  4. Step 4: Simplify right side
    12,628.48x = 153,893,824.52
  5. Step 5: Solve for x
    x = 153,893,824.52/12,628.48
  6. Step 6: Final answer
    x = 12,186.25

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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.