Home / 12,178.28-18,179.31-10,702.08

Finding the Fourth Proportional to 12,178.28, 18,179.31 and 10,702.08

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Solution

The fourth proportional to 12,178.28, 18,179.31 and 10,702.08 is: 15,975.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.28 : 18,179.31 = 10,702.08 : x
  2. Step 2: Convert to fraction form
    12,178.28/18,179.31 = 10,702.08/x
  3. Step 3: Cross multiply
    12,178.28x = 18,179.31 × 10,702.08
  4. Step 4: Simplify right side
    12,178.28x = 194,556,429.96
  5. Step 5: Solve for x
    x = 194,556,429.96/12,178.28
  6. Step 6: Final answer
    x = 15,975.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.