Home / 10,956.90-16,431.30-3,561.60

Finding the Fourth Proportional to 10,956.90, 16,431.30 and 3,561.60

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Solution

The fourth proportional to 10,956.90, 16,431.30 and 3,561.60 is: 5,341.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.90 : 16,431.30 = 3,561.60 : x
  2. Step 2: Convert to fraction form
    10,956.90/16,431.30 = 3,561.60/x
  3. Step 3: Cross multiply
    10,956.90x = 16,431.30 × 3,561.60
  4. Step 4: Simplify right side
    10,956.90x = 58,521,718.08
  5. Step 5: Solve for x
    x = 58,521,718.08/10,956.90
  6. Step 6: Final answer
    x = 5,341.08

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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.