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Finding the Fourth Proportional to 15,080.58, 20,810.28 and 8,365.82

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Solution

The fourth proportional to 15,080.58, 20,810.28 and 8,365.82 is: 11,544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.58 : 20,810.28 = 8,365.82 : x
  2. Step 2: Convert to fraction form
    15,080.58/20,810.28 = 8,365.82/x
  3. Step 3: Cross multiply
    15,080.58x = 20,810.28 × 8,365.82
  4. Step 4: Simplify right side
    15,080.58x = 174,094,983.95
  5. Step 5: Solve for x
    x = 174,094,983.95/15,080.58
  6. Step 6: Final answer
    x = 11,544.32

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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.