Home / 12,389.30-17,096.88-6,723.80

Finding the Fourth Proportional to 12,389.30, 17,096.88 and 6,723.80

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Solution

The fourth proportional to 12,389.30, 17,096.88 and 6,723.80 is: 9,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.30 : 17,096.88 = 6,723.80 : x
  2. Step 2: Convert to fraction form
    12,389.30/17,096.88 = 6,723.80/x
  3. Step 3: Cross multiply
    12,389.30x = 17,096.88 × 6,723.80
  4. Step 4: Simplify right side
    12,389.30x = 114,956,001.74
  5. Step 5: Solve for x
    x = 114,956,001.74/12,389.30
  6. Step 6: Final answer
    x = 9,278.65

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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.