Home / 13,211.20-18,233.13-7,908.94

Finding the Fourth Proportional to 13,211.20, 18,233.13 and 7,908.94

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Solution

The fourth proportional to 13,211.20, 18,233.13 and 7,908.94 is: 10,915.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.20 : 18,233.13 = 7,908.94 : x
  2. Step 2: Convert to fraction form
    13,211.20/18,233.13 = 7,908.94/x
  3. Step 3: Cross multiply
    13,211.20x = 18,233.13 × 7,908.94
  4. Step 4: Simplify right side
    13,211.20x = 144,204,731.18
  5. Step 5: Solve for x
    x = 144,204,731.18/13,211.20
  6. Step 6: Final answer
    x = 10,915.34

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1.5x scale

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.