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Finding the Fourth Proportional to 15,094.40, 20,829.27 and 8,379.70

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Solution

The fourth proportional to 15,094.40, 20,829.27 and 8,379.70 is: 11,563.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,094.40 : 20,829.27 = 8,379.70 : x
  2. Step 2: Convert to fraction form
    15,094.40/20,829.27 = 8,379.70/x
  3. Step 3: Cross multiply
    15,094.40x = 20,829.27 × 8,379.70
  4. Step 4: Simplify right side
    15,094.40x = 174,543,033.82
  5. Step 5: Solve for x
    x = 174,543,033.82/15,094.40
  6. Step 6: Final answer
    x = 11,563.43

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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.