Home / 11,921.68-17,882.24-4,130.40

Finding the Fourth Proportional to 11,921.68, 17,882.24 and 4,130.40

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Solution

The fourth proportional to 11,921.68, 17,882.24 and 4,130.40 is: 6,195.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.68 : 17,882.24 = 4,130.40 : x
  2. Step 2: Convert to fraction form
    11,921.68/17,882.24 = 4,130.40/x
  3. Step 3: Cross multiply
    11,921.68x = 17,882.24 × 4,130.40
  4. Step 4: Simplify right side
    11,921.68x = 73,860,804.10
  5. Step 5: Solve for x
    x = 73,860,804.10/11,921.68
  6. Step 6: Final answer
    x = 6,195.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.