Home / 10,476.77-15,711.79-3,455.20

Finding the Fourth Proportional to 10,476.77, 15,711.79 and 3,455.20

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Solution

The fourth proportional to 10,476.77, 15,711.79 and 3,455.20 is: 5,181.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,476.77 : 15,711.79 = 3,455.20 : x
  2. Step 2: Convert to fraction form
    10,476.77/15,711.79 = 3,455.20/x
  3. Step 3: Cross multiply
    10,476.77x = 15,711.79 × 3,455.20
  4. Step 4: Simplify right side
    10,476.77x = 54,287,416.09
  5. Step 5: Solve for x
    x = 54,287,416.09/10,476.77
  6. Step 6: Final answer
    x = 5,181.70

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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.