Home / 10,326.75-15,490.10-2,931.28

Finding the Fourth Proportional to 10,326.75, 15,490.10 and 2,931.28

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Solution

The fourth proportional to 10,326.75, 15,490.10 and 2,931.28 is: 4,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,326.75 : 15,490.10 = 2,931.28 : x
  2. Step 2: Convert to fraction form
    10,326.75/15,490.10 = 2,931.28/x
  3. Step 3: Cross multiply
    10,326.75x = 15,490.10 × 2,931.28
  4. Step 4: Simplify right side
    10,326.75x = 45,405,742.88
  5. Step 5: Solve for x
    x = 45,405,742.88/10,326.75
  6. Step 6: Final answer
    x = 4,396.91

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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.