Home / 10,430.76-15,644.64-2,639.16

Finding the Fourth Proportional to 10,430.76, 15,644.64 and 2,639.16

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Solution

The fourth proportional to 10,430.76, 15,644.64 and 2,639.16 is: 3,958.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.76 : 15,644.64 = 2,639.16 : x
  2. Step 2: Convert to fraction form
    10,430.76/15,644.64 = 2,639.16/x
  3. Step 3: Cross multiply
    10,430.76x = 15,644.64 × 2,639.16
  4. Step 4: Simplify right side
    10,430.76x = 41,288,708.10
  5. Step 5: Solve for x
    x = 41,288,708.10/10,430.76
  6. Step 6: Final answer
    x = 3,958.36

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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.