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Finding the Fourth Proportional to 12,702.09, 17,528.91 and 7,113.09

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Solution

The fourth proportional to 12,702.09, 17,528.91 and 7,113.09 is: 9,816.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702.09 : 17,528.91 = 7,113.09 : x
  2. Step 2: Convert to fraction form
    12,702.09/17,528.91 = 7,113.09/x
  3. Step 3: Cross multiply
    12,702.09x = 17,528.91 × 7,113.09
  4. Step 4: Simplify right side
    12,702.09x = 124,684,753.49
  5. Step 5: Solve for x
    x = 124,684,753.49/12,702.09
  6. Step 6: Final answer
    x = 9,816.08

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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.