Home / 12,429.11-18,651.15-4,643.39

Finding the Fourth Proportional to 12,429.11, 18,651.15 and 4,643.39

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Solution

The fourth proportional to 12,429.11, 18,651.15 and 4,643.39 is: 6,967.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.11 : 18,651.15 = 4,643.39 : x
  2. Step 2: Convert to fraction form
    12,429.11/18,651.15 = 4,643.39/x
  3. Step 3: Cross multiply
    12,429.11x = 18,651.15 × 4,643.39
  4. Step 4: Simplify right side
    12,429.11x = 86,604,470.14
  5. Step 5: Solve for x
    x = 86,604,470.14/12,429.11
  6. Step 6: Final answer
    x = 6,967.88

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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.