Home / 15,004.05-20,705.38-8,289.69

Finding the Fourth Proportional to 15,004.05, 20,705.38 and 8,289.69

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Solution

The fourth proportional to 15,004.05, 20,705.38 and 8,289.69 is: 11,439.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.05 : 20,705.38 = 8,289.69 : x
  2. Step 2: Convert to fraction form
    15,004.05/20,705.38 = 8,289.69/x
  3. Step 3: Cross multiply
    15,004.05x = 20,705.38 × 8,289.69
  4. Step 4: Simplify right side
    15,004.05x = 171,641,181.53
  5. Step 5: Solve for x
    x = 171,641,181.53/15,004.05
  6. Step 6: Final answer
    x = 11,439.66

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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.