Home / 12,934.78-19,392.28-5,909.92

Finding the Fourth Proportional to 12,934.78, 19,392.28 and 5,909.92

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Solution

The fourth proportional to 12,934.78, 19,392.28 and 5,909.92 is: 8,860.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,934.78 : 19,392.28 = 5,909.92 : x
  2. Step 2: Convert to fraction form
    12,934.78/19,392.28 = 5,909.92/x
  3. Step 3: Cross multiply
    12,934.78x = 19,392.28 × 5,909.92
  4. Step 4: Simplify right side
    12,934.78x = 114,606,823.42
  5. Step 5: Solve for x
    x = 114,606,823.42/12,934.78
  6. Step 6: Final answer
    x = 8,860.36

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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.