Home / 30,429.60-45,644.40-18,704.80

Finding the Fourth Proportional to 30,429.60, 45,644.40 and 18,704.80

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Solution

The fourth proportional to 30,429.60, 45,644.40 and 18,704.80 is: 28,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,429.60 : 45,644.40 = 18,704.80 : x
  2. Step 2: Convert to fraction form
    30,429.60/45,644.40 = 18,704.80/x
  3. Step 3: Cross multiply
    30,429.60x = 45,644.40 × 18,704.80
  4. Step 4: Simplify right side
    30,429.60x = 853,769,373.12
  5. Step 5: Solve for x
    x = 853,769,373.12/30,429.60
  6. Step 6: Final answer
    x = 28,057.20

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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.