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Finding the Fourth Proportional to 35,290.70, 52,957.98 and 21,989.80

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Solution

The fourth proportional to 35,290.70, 52,957.98 and 21,989.80 is: 32,998.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,290.70 : 52,957.98 = 21,989.80 : x
  2. Step 2: Convert to fraction form
    35,290.70/52,957.98 = 21,989.80/x
  3. Step 3: Cross multiply
    35,290.70x = 52,957.98 × 21,989.80
  4. Step 4: Simplify right side
    35,290.70x = 1,164,535,388.60
  5. Step 5: Solve for x
    x = 1,164,535,388.60/35,290.70
  6. Step 6: Final answer
    x = 32,998.36

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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.