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Finding the Fourth Proportional to 15,092.80, 20,830.56 and 8,805.18

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Solution

The fourth proportional to 15,092.80, 20,830.56 and 8,805.18 is: 12,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,092.80 : 20,830.56 = 8,805.18 : x
  2. Step 2: Convert to fraction form
    15,092.80/20,830.56 = 8,805.18/x
  3. Step 3: Cross multiply
    15,092.80x = 20,830.56 × 8,805.18
  4. Step 4: Simplify right side
    15,092.80x = 183,416,830.30
  5. Step 5: Solve for x
    x = 183,416,830.30/15,092.80
  6. Step 6: Final answer
    x = 12,152.60

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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.