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Finding the Fourth Proportional to 20,580.67, 30,864.86 and 8,734.24

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Solution

The fourth proportional to 20,580.67, 30,864.86 and 8,734.24 is: 13,098.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.67 : 30,864.86 = 8,734.24 : x
  2. Step 2: Convert to fraction form
    20,580.67/30,864.86 = 8,734.24/x
  3. Step 3: Cross multiply
    20,580.67x = 30,864.86 × 8,734.24
  4. Step 4: Simplify right side
    20,580.67x = 269,581,094.81
  5. Step 5: Solve for x
    x = 269,581,094.81/20,580.67
  6. Step 6: Final answer
    x = 13,098.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.