Home / 13,179.68-18,177.69-8,464.40

Finding the Fourth Proportional to 13,179.68, 18,177.69 and 8,464.40

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Solution

The fourth proportional to 13,179.68, 18,177.69 and 8,464.40 is: 11,674.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.68 : 18,177.69 = 8,464.40 : x
  2. Step 2: Convert to fraction form
    13,179.68/18,177.69 = 8,464.40/x
  3. Step 3: Cross multiply
    13,179.68x = 18,177.69 × 8,464.40
  4. Step 4: Simplify right side
    13,179.68x = 153,863,239.24
  5. Step 5: Solve for x
    x = 153,863,239.24/13,179.68
  6. Step 6: Final answer
    x = 11,674.28

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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.