Home / 10,490.13-15,730.34-3,911.58

Finding the Fourth Proportional to 10,490.13, 15,730.34 and 3,911.58

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Solution

The fourth proportional to 10,490.13, 15,730.34 and 3,911.58 is: 5,865.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,490.13 : 15,730.34 = 3,911.58 : x
  2. Step 2: Convert to fraction form
    10,490.13/15,730.34 = 3,911.58/x
  3. Step 3: Cross multiply
    10,490.13x = 15,730.34 × 3,911.58
  4. Step 4: Simplify right side
    10,490.13x = 61,530,463.78
  5. Step 5: Solve for x
    x = 61,530,463.78/10,490.13
  6. Step 6: Final answer
    x = 5,865.56

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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.