Home / 11,991.28-17,988.20-4,602

Finding the Fourth Proportional to 11,991.28, 17,988.20 and 4,602

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Solution

The fourth proportional to 11,991.28, 17,988.20 and 4,602 is: 6,903.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.28 : 17,988.20 = 4,602 : x
  2. Step 2: Convert to fraction form
    11,991.28/17,988.20 = 4,602/x
  3. Step 3: Cross multiply
    11,991.28x = 17,988.20 × 4,602
  4. Step 4: Simplify right side
    11,991.28x = 82,781,696.40
  5. Step 5: Solve for x
    x = 82,781,696.40/11,991.28
  6. Step 6: Final answer
    x = 6,903.49

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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.