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Finding the Fourth Proportional to 15,173.48, 20,938.64 and 9,508.48

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Solution

The fourth proportional to 15,173.48, 20,938.64 and 9,508.48 is: 13,121.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,173.48 : 20,938.64 = 9,508.48 : x
  2. Step 2: Convert to fraction form
    15,173.48/20,938.64 = 9,508.48/x
  3. Step 3: Cross multiply
    15,173.48x = 20,938.64 × 9,508.48
  4. Step 4: Simplify right side
    15,173.48x = 199,094,539.78
  5. Step 5: Solve for x
    x = 199,094,539.78/15,173.48
  6. Step 6: Final answer
    x = 13,121.22

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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.