Home / 10,865.13-16,303.26-5,172.54

Finding the Fourth Proportional to 10,865.13, 16,303.26 and 5,172.54

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Solution

The fourth proportional to 10,865.13, 16,303.26 and 5,172.54 is: 7,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.13 : 16,303.26 = 5,172.54 : x
  2. Step 2: Convert to fraction form
    10,865.13/16,303.26 = 5,172.54/x
  3. Step 3: Cross multiply
    10,865.13x = 16,303.26 × 5,172.54
  4. Step 4: Simplify right side
    10,865.13x = 84,329,233.94
  5. Step 5: Solve for x
    x = 84,329,233.94/10,865.13
  6. Step 6: Final answer
    x = 7,761.45

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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.