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Finding the Fourth Proportional to 15,080.09, 20,810.50 and 8,366.74

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Solution

The fourth proportional to 15,080.09, 20,810.50 and 8,366.74 is: 11,546.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.09 : 20,810.50 = 8,366.74 : x
  2. Step 2: Convert to fraction form
    15,080.09/20,810.50 = 8,366.74/x
  3. Step 3: Cross multiply
    15,080.09x = 20,810.50 × 8,366.74
  4. Step 4: Simplify right side
    15,080.09x = 174,116,042.77
  5. Step 5: Solve for x
    x = 174,116,042.77/15,080.09
  6. Step 6: Final answer
    x = 11,546.09

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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.