Home / 12,389.53-17,097.67-6,724.32

Finding the Fourth Proportional to 12,389.53, 17,097.67 and 6,724.32

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Solution

The fourth proportional to 12,389.53, 17,097.67 and 6,724.32 is: 9,279.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.53 : 17,097.67 = 6,724.32 : x
  2. Step 2: Convert to fraction form
    12,389.53/17,097.67 = 6,724.32/x
  3. Step 3: Cross multiply
    12,389.53x = 17,097.67 × 6,724.32
  4. Step 4: Simplify right side
    12,389.53x = 114,970,170.71
  5. Step 5: Solve for x
    x = 114,970,170.71/12,389.53
  6. Step 6: Final answer
    x = 9,279.63

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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.