Home / 12,821.68-19,238.28-6,969.52

Finding the Fourth Proportional to 12,821.68, 19,238.28 and 6,969.52

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Solution

The fourth proportional to 12,821.68, 19,238.28 and 6,969.52 is: 10,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.68 : 19,238.28 = 6,969.52 : x
  2. Step 2: Convert to fraction form
    12,821.68/19,238.28 = 6,969.52/x
  3. Step 3: Cross multiply
    12,821.68x = 19,238.28 × 6,969.52
  4. Step 4: Simplify right side
    12,821.68x = 134,081,577.23
  5. Step 5: Solve for x
    x = 134,081,577.23/12,821.68
  6. Step 6: Final answer
    x = 10,457.41

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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.