Home / 12,819.13-17,690.39-7,230.13

Finding the Fourth Proportional to 12,819.13, 17,690.39 and 7,230.13

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Solution

The fourth proportional to 12,819.13, 17,690.39 and 7,230.13 is: 9,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.13 : 17,690.39 = 7,230.13 : x
  2. Step 2: Convert to fraction form
    12,819.13/17,690.39 = 7,230.13/x
  3. Step 3: Cross multiply
    12,819.13x = 17,690.39 × 7,230.13
  4. Step 4: Simplify right side
    12,819.13x = 127,903,819.45
  5. Step 5: Solve for x
    x = 127,903,819.45/12,819.13
  6. Step 6: Final answer
    x = 9,977.57

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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.