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Finding the Fourth Proportional to 12,630.40, 17,411.76 and 8,841.88

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Solution

The fourth proportional to 12,630.40, 17,411.76 and 8,841.88 is: 12,189.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.40 : 17,411.76 = 8,841.88 : x
  2. Step 2: Convert to fraction form
    12,630.40/17,411.76 = 8,841.88/x
  3. Step 3: Cross multiply
    12,630.40x = 17,411.76 × 8,841.88
  4. Step 4: Simplify right side
    12,630.40x = 153,952,692.51
  5. Step 5: Solve for x
    x = 153,952,692.51/12,630.40
  6. Step 6: Final answer
    x = 12,189.06

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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.