Home / 12,929.18-19,393.78-4,164.08

Finding the Fourth Proportional to 12,929.18, 19,393.78 and 4,164.08

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Solution

The fourth proportional to 12,929.18, 19,393.78 and 4,164.08 is: 6,246.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.18 : 19,393.78 = 4,164.08 : x
  2. Step 2: Convert to fraction form
    12,929.18/19,393.78 = 4,164.08/x
  3. Step 3: Cross multiply
    12,929.18x = 19,393.78 × 4,164.08
  4. Step 4: Simplify right side
    12,929.18x = 80,757,251.42
  5. Step 5: Solve for x
    x = 80,757,251.42/12,929.18
  6. Step 6: Final answer
    x = 6,246.12

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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.