Home / 13,160.04-18,180.06-11,388.57

Finding the Fourth Proportional to 13,160.04, 18,180.06 and 11,388.57

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Solution

The fourth proportional to 13,160.04, 18,180.06 and 11,388.57 is: 15,732.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.04 : 18,180.06 = 11,388.57 : x
  2. Step 2: Convert to fraction form
    13,160.04/18,180.06 = 11,388.57/x
  3. Step 3: Cross multiply
    13,160.04x = 18,180.06 × 11,388.57
  4. Step 4: Simplify right side
    13,160.04x = 207,044,907.27
  5. Step 5: Solve for x
    x = 207,044,907.27/13,160.04
  6. Step 6: Final answer
    x = 15,732.85

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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.