Home / 9,913.20-13,679.81-5,931.96

Finding the Fourth Proportional to 9,913.20, 13,679.81 and 5,931.96

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Solution

The fourth proportional to 9,913.20, 13,679.81 and 5,931.96 is: 8,185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,913.20 : 13,679.81 = 5,931.96 : x
  2. Step 2: Convert to fraction form
    9,913.20/13,679.81 = 5,931.96/x
  3. Step 3: Cross multiply
    9,913.20x = 13,679.81 × 5,931.96
  4. Step 4: Simplify right side
    9,913.20x = 81,148,056.07
  5. Step 5: Solve for x
    x = 81,148,056.07/9,913.20
  6. Step 6: Final answer
    x = 8,185.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.