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Finding the Fourth Proportional to 12,602.12, 17,390.97 and 6,859.53

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Solution

The fourth proportional to 12,602.12, 17,390.97 and 6,859.53 is: 9,466.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.12 : 17,390.97 = 6,859.53 : x
  2. Step 2: Convert to fraction form
    12,602.12/17,390.97 = 6,859.53/x
  3. Step 3: Cross multiply
    12,602.12x = 17,390.97 × 6,859.53
  4. Step 4: Simplify right side
    12,602.12x = 119,293,880.44
  5. Step 5: Solve for x
    x = 119,293,880.44/12,602.12
  6. Step 6: Final answer
    x = 9,466.18

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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.