Home / 10,996.20-15,171.16-7,018.60

Finding the Fourth Proportional to 10,996.20, 15,171.16 and 7,018.60

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Solution

The fourth proportional to 10,996.20, 15,171.16 and 7,018.60 is: 9,683.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,996.20 : 15,171.16 = 7,018.60 : x
  2. Step 2: Convert to fraction form
    10,996.20/15,171.16 = 7,018.60/x
  3. Step 3: Cross multiply
    10,996.20x = 15,171.16 × 7,018.60
  4. Step 4: Simplify right side
    10,996.20x = 106,480,303.58
  5. Step 5: Solve for x
    x = 106,480,303.58/10,996.20
  6. Step 6: Final answer
    x = 9,683.37

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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.