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Finding the Fourth Proportional to 15,164.05, 20,926.53 and 8,358.32

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Solution

The fourth proportional to 15,164.05, 20,926.53 and 8,358.32 is: 11,534.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,164.05 : 20,926.53 = 8,358.32 : x
  2. Step 2: Convert to fraction form
    15,164.05/20,926.53 = 8,358.32/x
  3. Step 3: Cross multiply
    15,164.05x = 20,926.53 × 8,358.32
  4. Step 4: Simplify right side
    15,164.05x = 174,910,634.23
  5. Step 5: Solve for x
    x = 174,910,634.23/15,164.05
  6. Step 6: Final answer
    x = 11,534.56

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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.