Home / 12,819.35-17,690.67-7,153.75

Finding the Fourth Proportional to 12,819.35, 17,690.67 and 7,153.75

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Solution

The fourth proportional to 12,819.35, 17,690.67 and 7,153.75 is: 9,872.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.35 : 17,690.67 = 7,153.75 : x
  2. Step 2: Convert to fraction form
    12,819.35/17,690.67 = 7,153.75/x
  3. Step 3: Cross multiply
    12,819.35x = 17,690.67 × 7,153.75
  4. Step 4: Simplify right side
    12,819.35x = 126,554,630.51
  5. Step 5: Solve for x
    x = 126,554,630.51/12,819.35
  6. Step 6: Final answer
    x = 9,872.16

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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.