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Finding the Fourth Proportional to 12,347.34, 17,005.12 and 10,668.21

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Solution

The fourth proportional to 12,347.34, 17,005.12 and 10,668.21 is: 14,692.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.34 : 17,005.12 = 10,668.21 : x
  2. Step 2: Convert to fraction form
    12,347.34/17,005.12 = 10,668.21/x
  3. Step 3: Cross multiply
    12,347.34x = 17,005.12 × 10,668.21
  4. Step 4: Simplify right side
    12,347.34x = 181,414,191.24
  5. Step 5: Solve for x
    x = 181,414,191.24/12,347.34
  6. Step 6: Final answer
    x = 14,692.57

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Double scale
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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.