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Finding the Fourth Proportional to 15,036.75, 20,750.42 and 8,322.38

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Solution

The fourth proportional to 15,036.75, 20,750.42 and 8,322.38 is: 11,484.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.75 : 20,750.42 = 8,322.38 : x
  2. Step 2: Convert to fraction form
    15,036.75/20,750.42 = 8,322.38/x
  3. Step 3: Cross multiply
    15,036.75x = 20,750.42 × 8,322.38
  4. Step 4: Simplify right side
    15,036.75x = 172,692,735.04
  5. Step 5: Solve for x
    x = 172,692,735.04/15,036.75
  6. Step 6: Final answer
    x = 11,484.71

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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.