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Finding the Fourth Proportional to 12,668.79, 18,998.52 and 4,346.58

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Solution

The fourth proportional to 12,668.79, 18,998.52 and 4,346.58 is: 6,518.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.79 : 18,998.52 = 4,346.58 : x
  2. Step 2: Convert to fraction form
    12,668.79/18,998.52 = 4,346.58/x
  3. Step 3: Cross multiply
    12,668.79x = 18,998.52 × 4,346.58
  4. Step 4: Simplify right side
    12,668.79x = 82,578,587.06
  5. Step 5: Solve for x
    x = 82,578,587.06/12,668.79
  6. Step 6: Final answer
    x = 6,518.27

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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.