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Finding the Fourth Proportional to 15,009.56, 20,723.24 and 9,346.60

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Solution

The fourth proportional to 15,009.56, 20,723.24 and 9,346.60 is: 12,904.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.56 : 20,723.24 = 9,346.60 : x
  2. Step 2: Convert to fraction form
    15,009.56/20,723.24 = 9,346.60/x
  3. Step 3: Cross multiply
    15,009.56x = 20,723.24 × 9,346.60
  4. Step 4: Simplify right side
    15,009.56x = 193,691,834.98
  5. Step 5: Solve for x
    x = 193,691,834.98/15,009.56
  6. Step 6: Final answer
    x = 12,904.56

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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.