Home / 10,455.84-15,687.36-5,265.36

Finding the Fourth Proportional to 10,455.84, 15,687.36 and 5,265.36

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Solution

The fourth proportional to 10,455.84, 15,687.36 and 5,265.36 is: 7,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.84 : 15,687.36 = 5,265.36 : x
  2. Step 2: Convert to fraction form
    10,455.84/15,687.36 = 5,265.36/x
  3. Step 3: Cross multiply
    10,455.84x = 15,687.36 × 5,265.36
  4. Step 4: Simplify right side
    10,455.84x = 82,599,597.85
  5. Step 5: Solve for x
    x = 82,599,597.85/10,455.84
  6. Step 6: Final answer
    x = 7,899.85

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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.