Home / 12,389.64-17,097.12-6,724.26

Finding the Fourth Proportional to 12,389.64, 17,097.12 and 6,724.26

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Solution

The fourth proportional to 12,389.64, 17,097.12 and 6,724.26 is: 9,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.64 : 17,097.12 = 6,724.26 : x
  2. Step 2: Convert to fraction form
    12,389.64/17,097.12 = 6,724.26/x
  3. Step 3: Cross multiply
    12,389.64x = 17,097.12 × 6,724.26
  4. Step 4: Simplify right side
    12,389.64x = 114,965,480.13
  5. Step 5: Solve for x
    x = 114,965,480.13/12,389.64
  6. Step 6: Final answer
    x = 9,279.16

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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.