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Finding the Fourth Proportional to 21,325.45, 29,816.75 and 21,325.45

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Solution

The fourth proportional to 21,325.45, 29,816.75 and 21,325.45 is: 29,816.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.45 : 29,816.75 = 21,325.45 : x
  2. Step 2: Convert to fraction form
    21,325.45/29,816.75 = 21,325.45/x
  3. Step 3: Cross multiply
    21,325.45x = 29,816.75 × 21,325.45
  4. Step 4: Simplify right side
    21,325.45x = 635,855,611.29
  5. Step 5: Solve for x
    x = 635,855,611.29/21,325.45
  6. Step 6: Final answer
    x = 29,816.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.