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Finding the Fourth Proportional to 15,094.49, 20,829.51 and 8,379.63

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Solution

The fourth proportional to 15,094.49, 20,829.51 and 8,379.63 is: 11,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,094.49 : 20,829.51 = 8,379.63 : x
  2. Step 2: Convert to fraction form
    15,094.49/20,829.51 = 8,379.63/x
  3. Step 3: Cross multiply
    15,094.49x = 20,829.51 × 8,379.63
  4. Step 4: Simplify right side
    15,094.49x = 174,543,586.88
  5. Step 5: Solve for x
    x = 174,543,586.88/15,094.49
  6. Step 6: Final answer
    x = 11,563.40

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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.