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Finding the Fourth Proportional to 15,007.58, 20,709.37 and 8,293.12

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Solution

The fourth proportional to 15,007.58, 20,709.37 and 8,293.12 is: 11,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.58 : 20,709.37 = 8,293.12 : x
  2. Step 2: Convert to fraction form
    15,007.58/20,709.37 = 8,293.12/x
  3. Step 3: Cross multiply
    15,007.58x = 20,709.37 × 8,293.12
  4. Step 4: Simplify right side
    15,007.58x = 171,745,249.13
  5. Step 5: Solve for x
    x = 171,745,249.13/15,007.58
  6. Step 6: Final answer
    x = 11,443.90

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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.