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Finding the Fourth Proportional to 20,654.77, 30,984.96 and 7,510.90

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Solution

The fourth proportional to 20,654.77, 30,984.96 and 7,510.90 is: 11,267.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.77 : 30,984.96 = 7,510.90 : x
  2. Step 2: Convert to fraction form
    20,654.77/30,984.96 = 7,510.90/x
  3. Step 3: Cross multiply
    20,654.77x = 30,984.96 × 7,510.90
  4. Step 4: Simplify right side
    20,654.77x = 232,724,936.06
  5. Step 5: Solve for x
    x = 232,724,936.06/20,654.77
  6. Step 6: Final answer
    x = 11,267.37

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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.