Home / 12,911.49-17,826.66-8,668.89

Finding the Fourth Proportional to 12,911.49, 17,826.66 and 8,668.89

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Solution

The fourth proportional to 12,911.49, 17,826.66 and 8,668.89 is: 11,968.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.49 : 17,826.66 = 8,668.89 : x
  2. Step 2: Convert to fraction form
    12,911.49/17,826.66 = 8,668.89/x
  3. Step 3: Cross multiply
    12,911.49x = 17,826.66 × 8,668.89
  4. Step 4: Simplify right side
    12,911.49x = 154,537,354.61
  5. Step 5: Solve for x
    x = 154,537,354.61/12,911.49
  6. Step 6: Final answer
    x = 11,968.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.