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Finding the Fourth Proportional to 15,173.45, 20,942.71 and 9,859.04

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Solution

The fourth proportional to 15,173.45, 20,942.71 and 9,859.04 is: 13,607.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,173.45 : 20,942.71 = 9,859.04 : x
  2. Step 2: Convert to fraction form
    15,173.45/20,942.71 = 9,859.04/x
  3. Step 3: Cross multiply
    15,173.45x = 20,942.71 × 9,859.04
  4. Step 4: Simplify right side
    15,173.45x = 206,474,886.24
  5. Step 5: Solve for x
    x = 206,474,886.24/15,173.45
  6. Step 6: Final answer
    x = 13,607.65

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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.