Home / 10,538.15-15,807.21-3,423.81

Finding the Fourth Proportional to 10,538.15, 15,807.21 and 3,423.81

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Solution

The fourth proportional to 10,538.15, 15,807.21 and 3,423.81 is: 5,135.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,538.15 : 15,807.21 = 3,423.81 : x
  2. Step 2: Convert to fraction form
    10,538.15/15,807.21 = 3,423.81/x
  3. Step 3: Cross multiply
    10,538.15x = 15,807.21 × 3,423.81
  4. Step 4: Simplify right side
    10,538.15x = 54,120,883.67
  5. Step 5: Solve for x
    x = 54,120,883.67/10,538.15
  6. Step 6: Final answer
    x = 5,135.71

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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.