Home / 11,390.81-17,095.32-4,821.57

Finding the Fourth Proportional to 11,390.81, 17,095.32 and 4,821.57

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Solution

The fourth proportional to 11,390.81, 17,095.32 and 4,821.57 is: 7,236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.81 : 17,095.32 = 4,821.57 : x
  2. Step 2: Convert to fraction form
    11,390.81/17,095.32 = 4,821.57/x
  3. Step 3: Cross multiply
    11,390.81x = 17,095.32 × 4,821.57
  4. Step 4: Simplify right side
    11,390.81x = 82,426,282.05
  5. Step 5: Solve for x
    x = 82,426,282.05/11,390.81
  6. Step 6: Final answer
    x = 7,236.21

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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.