Home / 12,107.49-18,159.89-4,208.64

Finding the Fourth Proportional to 12,107.49, 18,159.89 and 4,208.64

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Solution

The fourth proportional to 12,107.49, 18,159.89 and 4,208.64 is: 6,312.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.49 : 18,159.89 = 4,208.64 : x
  2. Step 2: Convert to fraction form
    12,107.49/18,159.89 = 4,208.64/x
  3. Step 3: Cross multiply
    12,107.49x = 18,159.89 × 4,208.64
  4. Step 4: Simplify right side
    12,107.49x = 76,428,418.41
  5. Step 5: Solve for x
    x = 76,428,418.41/12,107.49
  6. Step 6: Final answer
    x = 6,312.49

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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.