Home / 13,148.77-18,144.62-7,179.28

Finding the Fourth Proportional to 13,148.77, 18,144.62 and 7,179.28

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Solution

The fourth proportional to 13,148.77, 18,144.62 and 7,179.28 is: 9,907.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.77 : 18,144.62 = 7,179.28 : x
  2. Step 2: Convert to fraction form
    13,148.77/18,144.62 = 7,179.28/x
  3. Step 3: Cross multiply
    13,148.77x = 18,144.62 × 7,179.28
  4. Step 4: Simplify right side
    13,148.77x = 130,265,271.58
  5. Step 5: Solve for x
    x = 130,265,271.58/13,148.77
  6. Step 6: Final answer
    x = 9,907.03

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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.