Home / 12,623.66-17,420.72-7,321.62

Finding the Fourth Proportional to 12,623.66, 17,420.72 and 7,321.62

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Solution

The fourth proportional to 12,623.66, 17,420.72 and 7,321.62 is: 10,103.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.66 : 17,420.72 = 7,321.62 : x
  2. Step 2: Convert to fraction form
    12,623.66/17,420.72 = 7,321.62/x
  3. Step 3: Cross multiply
    12,623.66x = 17,420.72 × 7,321.62
  4. Step 4: Simplify right side
    12,623.66x = 127,547,891.97
  5. Step 5: Solve for x
    x = 127,547,891.97/12,623.66
  6. Step 6: Final answer
    x = 10,103.88

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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.