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Finding the Fourth Proportional to 15,080.63, 20,808.93 and 8,620.17

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Solution

The fourth proportional to 15,080.63, 20,808.93 and 8,620.17 is: 11,894.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.63 : 20,808.93 = 8,620.17 : x
  2. Step 2: Convert to fraction form
    15,080.63/20,808.93 = 8,620.17/x
  3. Step 3: Cross multiply
    15,080.63x = 20,808.93 × 8,620.17
  4. Step 4: Simplify right side
    15,080.63x = 179,376,512.73
  5. Step 5: Solve for x
    x = 179,376,512.73/15,080.63
  6. Step 6: Final answer
    x = 11,894.50

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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.