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Finding the Fourth Proportional to 13,110.30, 18,092.70 and 7,805.70

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Solution

The fourth proportional to 13,110.30, 18,092.70 and 7,805.70 is: 10,772.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.30 : 18,092.70 = 7,805.70 : x
  2. Step 2: Convert to fraction form
    13,110.30/18,092.70 = 7,805.70/x
  3. Step 3: Cross multiply
    13,110.30x = 18,092.70 × 7,805.70
  4. Step 4: Simplify right side
    13,110.30x = 141,226,188.39
  5. Step 5: Solve for x
    x = 141,226,188.39/13,110.30
  6. Step 6: Final answer
    x = 10,772.16

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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.