Home / 10,816.47-16,218.90-4,969.89

Finding the Fourth Proportional to 10,816.47, 16,218.90 and 4,969.89

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Solution

The fourth proportional to 10,816.47, 16,218.90 and 4,969.89 is: 7,452.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,816.47 : 16,218.90 = 4,969.89 : x
  2. Step 2: Convert to fraction form
    10,816.47/16,218.90 = 4,969.89/x
  3. Step 3: Cross multiply
    10,816.47x = 16,218.90 × 4,969.89
  4. Step 4: Simplify right side
    10,816.47x = 80,606,148.92
  5. Step 5: Solve for x
    x = 80,606,148.92/10,816.47
  6. Step 6: Final answer
    x = 7,452.17

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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.