Home / 10,528.12-15,786.90-3,505.66

Finding the Fourth Proportional to 10,528.12, 15,786.90 and 3,505.66

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Solution

The fourth proportional to 10,528.12, 15,786.90 and 3,505.66 is: 5,256.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,528.12 : 15,786.90 = 3,505.66 : x
  2. Step 2: Convert to fraction form
    10,528.12/15,786.90 = 3,505.66/x
  3. Step 3: Cross multiply
    10,528.12x = 15,786.90 × 3,505.66
  4. Step 4: Simplify right side
    10,528.12x = 55,343,464.39
  5. Step 5: Solve for x
    x = 55,343,464.39/10,528.12
  6. Step 6: Final answer
    x = 5,256.73

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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.