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Finding the Fourth Proportional to 21,937.00, 32,905.47 and 7,145.89

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Solution

The fourth proportional to 21,937.00, 32,905.47 and 7,145.89 is: 10,718.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,937.00 : 32,905.47 = 7,145.89 : x
  2. Step 2: Convert to fraction form
    21,937.00/32,905.47 = 7,145.89/x
  3. Step 3: Cross multiply
    21,937.00x = 32,905.47 × 7,145.89
  4. Step 4: Simplify right side
    21,937.00x = 235,138,998.64
  5. Step 5: Solve for x
    x = 235,138,998.64/21,937.00
  6. Step 6: Final answer
    x = 10,718.83

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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.