Home / 12,389.29-17,097.35-6,724.09

Finding the Fourth Proportional to 12,389.29, 17,097.35 and 6,724.09

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Solution

The fourth proportional to 12,389.29, 17,097.35 and 6,724.09 is: 9,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.29 : 17,097.35 = 6,724.09 : x
  2. Step 2: Convert to fraction form
    12,389.29/17,097.35 = 6,724.09/x
  3. Step 3: Cross multiply
    12,389.29x = 17,097.35 × 6,724.09
  4. Step 4: Simplify right side
    12,389.29x = 114,964,043.80
  5. Step 5: Solve for x
    x = 114,964,043.80/12,389.29
  6. Step 6: Final answer
    x = 9,279.31

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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.