Home / 12,389.40-17,097.30-6,724.26

Finding the Fourth Proportional to 12,389.40, 17,097.30 and 6,724.26

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Solution

The fourth proportional to 12,389.40, 17,097.30 and 6,724.26 is: 9,279.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.40 : 17,097.30 = 6,724.26 : x
  2. Step 2: Convert to fraction form
    12,389.40/17,097.30 = 6,724.26/x
  3. Step 3: Cross multiply
    12,389.40x = 17,097.30 × 6,724.26
  4. Step 4: Simplify right side
    12,389.40x = 114,966,690.50
  5. Step 5: Solve for x
    x = 114,966,690.50/12,389.40
  6. Step 6: Final answer
    x = 9,279.44

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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.