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Finding the Fourth Proportional to 12,007.71, 16,570.71 and 6,702.80

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Solution

The fourth proportional to 12,007.71, 16,570.71 and 6,702.80 is: 9,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.71 : 16,570.71 = 6,702.80 : x
  2. Step 2: Convert to fraction form
    12,007.71/16,570.71 = 6,702.80/x
  3. Step 3: Cross multiply
    12,007.71x = 16,570.71 × 6,702.80
  4. Step 4: Simplify right side
    12,007.71x = 111,070,072.13
  5. Step 5: Solve for x
    x = 111,070,072.13/12,007.71
  6. Step 6: Final answer
    x = 9,249.90

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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.