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Finding the Fourth Proportional to 20,531.34, 30,797.01 and 11,760.12

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Solution

The fourth proportional to 20,531.34, 30,797.01 and 11,760.12 is: 17,640.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.34 : 30,797.01 = 11,760.12 : x
  2. Step 2: Convert to fraction form
    20,531.34/30,797.01 = 11,760.12/x
  3. Step 3: Cross multiply
    20,531.34x = 30,797.01 × 11,760.12
  4. Step 4: Simplify right side
    20,531.34x = 362,176,533.24
  5. Step 5: Solve for x
    x = 362,176,533.24/20,531.34
  6. Step 6: Final answer
    x = 17,640.18

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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.