Home / 12,389.46-17,097.57-6,724.20

Finding the Fourth Proportional to 12,389.46, 17,097.57 and 6,724.20

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Solution

The fourth proportional to 12,389.46, 17,097.57 and 6,724.20 is: 9,279.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.46 : 17,097.57 = 6,724.20 : x
  2. Step 2: Convert to fraction form
    12,389.46/17,097.57 = 6,724.20/x
  3. Step 3: Cross multiply
    12,389.46x = 17,097.57 × 6,724.20
  4. Step 4: Simplify right side
    12,389.46x = 114,967,480.19
  5. Step 5: Solve for x
    x = 114,967,480.19/12,389.46
  6. Step 6: Final answer
    x = 9,279.46

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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.