Home / 12,910.12-19,371.66-9,788.92

Finding the Fourth Proportional to 12,910.12, 19,371.66 and 9,788.92

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Solution

The fourth proportional to 12,910.12, 19,371.66 and 9,788.92 is: 14,688.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.12 : 19,371.66 = 9,788.92 : x
  2. Step 2: Convert to fraction form
    12,910.12/19,371.66 = 9,788.92/x
  3. Step 3: Cross multiply
    12,910.12x = 19,371.66 × 9,788.92
  4. Step 4: Simplify right side
    12,910.12x = 189,627,630.01
  5. Step 5: Solve for x
    x = 189,627,630.01/12,910.12
  6. Step 6: Final answer
    x = 14,688.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.