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Finding the Fourth Proportional to 21,469.30, 32,206.87 and 7,425.56

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Solution

The fourth proportional to 21,469.30, 32,206.87 and 7,425.56 is: 11,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.30 : 32,206.87 = 7,425.56 : x
  2. Step 2: Convert to fraction form
    21,469.30/32,206.87 = 7,425.56/x
  3. Step 3: Cross multiply
    21,469.30x = 32,206.87 × 7,425.56
  4. Step 4: Simplify right side
    21,469.30x = 239,154,065.70
  5. Step 5: Solve for x
    x = 239,154,065.70/21,469.30
  6. Step 6: Final answer
    x = 11,139.35

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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.