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Finding the Fourth Proportional to 29,913.60, 44,967.60 and 21,208.80

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Solution

The fourth proportional to 29,913.60, 44,967.60 and 21,208.80 is: 31,882.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,913.60 : 44,967.60 = 21,208.80 : x
  2. Step 2: Convert to fraction form
    29,913.60/44,967.60 = 21,208.80/x
  3. Step 3: Cross multiply
    29,913.60x = 44,967.60 × 21,208.80
  4. Step 4: Simplify right side
    29,913.60x = 953,708,834.88
  5. Step 5: Solve for x
    x = 953,708,834.88/29,913.60
  6. Step 6: Final answer
    x = 31,882.11

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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.