Home / 13,148.76-18,144.61-7,179.28

Finding the Fourth Proportional to 13,148.76, 18,144.61 and 7,179.28

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Solution

The fourth proportional to 13,148.76, 18,144.61 and 7,179.28 is: 9,907.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.76 : 18,144.61 = 7,179.28 : x
  2. Step 2: Convert to fraction form
    13,148.76/18,144.61 = 7,179.28/x
  3. Step 3: Cross multiply
    13,148.76x = 18,144.61 × 7,179.28
  4. Step 4: Simplify right side
    13,148.76x = 130,265,235.68
  5. Step 5: Solve for x
    x = 130,265,235.68/13,148.76
  6. Step 6: Final answer
    x = 9,907.04

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Double scale
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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.