Home / 13,177.52-18,179.84-8,464.40

Finding the Fourth Proportional to 13,177.52, 18,179.84 and 8,464.40

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Solution

The fourth proportional to 13,177.52, 18,179.84 and 8,464.40 is: 11,677.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.52 : 18,179.84 = 8,464.40 : x
  2. Step 2: Convert to fraction form
    13,177.52/18,179.84 = 8,464.40/x
  3. Step 3: Cross multiply
    13,177.52x = 18,179.84 × 8,464.40
  4. Step 4: Simplify right side
    13,177.52x = 153,881,437.70
  5. Step 5: Solve for x
    x = 153,881,437.70/13,177.52
  6. Step 6: Final answer
    x = 11,677.57

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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.