Home / 11,619.12-17,428.66-4,688.76

Finding the Fourth Proportional to 11,619.12, 17,428.66 and 4,688.76

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Solution

The fourth proportional to 11,619.12, 17,428.66 and 4,688.76 is: 7,033.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,619.12 : 17,428.66 = 4,688.76 : x
  2. Step 2: Convert to fraction form
    11,619.12/17,428.66 = 4,688.76/x
  3. Step 3: Cross multiply
    11,619.12x = 17,428.66 × 4,688.76
  4. Step 4: Simplify right side
    11,619.12x = 81,718,803.86
  5. Step 5: Solve for x
    x = 81,718,803.86/11,619.12
  6. Step 6: Final answer
    x = 7,033.13

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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.