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Finding the Fourth Proportional to 12,702.90, 17,525.88 and 8,230.08

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Solution

The fourth proportional to 12,702.90, 17,525.88 and 8,230.08 is: 11,354.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702.90 : 17,525.88 = 8,230.08 : x
  2. Step 2: Convert to fraction form
    12,702.90/17,525.88 = 8,230.08/x
  3. Step 3: Cross multiply
    12,702.90x = 17,525.88 × 8,230.08
  4. Step 4: Simplify right side
    12,702.90x = 144,239,394.47
  5. Step 5: Solve for x
    x = 144,239,394.47/12,702.90
  6. Step 6: Final answer
    x = 11,354.84

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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.