Home / 13,056.20-18,013.26-7,390.38

Finding the Fourth Proportional to 13,056.20, 18,013.26 and 7,390.38

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Solution

The fourth proportional to 13,056.20, 18,013.26 and 7,390.38 is: 10,196.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.20 : 18,013.26 = 7,390.38 : x
  2. Step 2: Convert to fraction form
    13,056.20/18,013.26 = 7,390.38/x
  3. Step 3: Cross multiply
    13,056.20x = 18,013.26 × 7,390.38
  4. Step 4: Simplify right side
    13,056.20x = 133,124,836.44
  5. Step 5: Solve for x
    x = 133,124,836.44/13,056.20
  6. Step 6: Final answer
    x = 10,196.29

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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.