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Finding the Fourth Proportional to 15,080.82, 20,811.51 and 8,367.51

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Solution

The fourth proportional to 15,080.82, 20,811.51 and 8,367.51 is: 11,547.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.82 : 20,811.51 = 8,367.51 : x
  2. Step 2: Convert to fraction form
    15,080.82/20,811.51 = 8,367.51/x
  3. Step 3: Cross multiply
    15,080.82x = 20,811.51 × 8,367.51
  4. Step 4: Simplify right side
    15,080.82x = 174,140,518.04
  5. Step 5: Solve for x
    x = 174,140,518.04/15,080.82
  6. Step 6: Final answer
    x = 11,547.15

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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.